Que- A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________?

a. 5 kmph

b. 10 kmph

c. 30 kmph

d. 15 kmph

Answer- 5 kmph

Que- A man can row upstream at 25 kmph and downstream at 35 kmph, and then find the speed of the man in still water?

a. 60 kmph

b. 10 kmph

c. 30 kmph

d. 5 kmph

Answer- 30 kmph

Que- A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is________?

a. 10 kmph

b. 5 kmph

c. 20 kmph

d. 22 kmph

Answer- 20 kmph

Que- A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is_________?

a. 3.0

b. 7.5

c. 2.25

d. 1.5

Answer- 1.5

Que- A man can row his boat with the stream at 6 km/h and against the stream in 4 km/h. The man’s rate is________?

a. 1 kmph

b. 5 kmph

c. 8 kmph

d. 3 kmph

Answer- 1 kmph

Que- A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is________?

a. 7 km/h

b. 5 km/h

c. 3 km/h

d. 2 (1/2) km/h

Answer- 2 (1/2) km/h

Que- A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?

a. 3.0

b. 4.0

c. 4 (1/2)

d. Insufficient data

Answer- 3.0

Que- If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the man’s rate along the current is__________?

a. 4.25 kmph

b. 6 kmph

c. 6.5 kmph

d. 8.5 kmph

Answer- 6.5 kmph

Que- A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is________?

a. 31-Dec-1899

b. 31-Dec-1899

c. 31-Dec-1899

d. 31-Dec-1899

Answer- 31-Dec-1899

Que- Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is_________?

a. 16 hours

b. 18 hours

c. 20 hours

d. 24 hours

Answer- 24 hours

Que- A man can row three-quarters of a kilometre against the stream in 11 minutes and down the stream in 7 minutes. The speed (in km/hr) of the man in still water is:_________?

a. 2.0

b. 3.0

c. 4.0

d. 5.0

Answer- 5.0

Que- A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?

a. 40 minutes

b. 1 hour

c. 1 hr 15 min

d. 1 hr 30 min

Answer- 1 hr 15 min

Que- A man can row 9 1/3 km/hr in still water and he finds that is thrice as much time to row u p than as to row down the same distance in river. The speed of the current is:________?

a. 3 1/3 km/hr

b. 3 1/9 km/hr

c. 1 ¼ km/hr

d. 4 2/3 km/hr

Answer- 4 2/3 km/hr

Que- A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9km/hr and the speed of the current is 3km/hr, the distance A and B is:_______?

a. 4km

b. 6 km

c. 8 km

d. 12 km

Answer- 12 km

Que- The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is________?

a. 1.5km/hr

b. 3km/hr

c. 1km/hr

d. none

Answer- 1km/hr

Que- A boat takes half time in moving a certain distance downstream than upstream. What is the ratio between the rate in still water and rate of current?

a. 31-Dec-1899

b. 31-Dec-1899

c. 31-Dec-1899

d. 31-Dec-1899

Answer- 31-Dec-1899

Que- A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will he take to go 5km in stationery water?

a. 40 Minutes

b. 1 Hour

c. 1 hr 15 Min

d. 1 Hr 30 Min

Answer- 1 hr 15 Min

Que- If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is__________?

a. 53.33

b. 54.68

c. 55.0

d. None of these

Answer- 54.68

Que- The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.

a. 47.55 kg

b. 48 kg

c. 48.55 kg

d. 49.25 kg

Answer- 48.55 kg

Que- The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?

a. 17 kg

b. 20 kg

c. 26 kg

d. 31 kg

Answer- 31 kg

Que- The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is___________?

a. 123.0

b. 137.0

c. 121.0

d. 122.0

Answer- 122.0

Que- A person travels from x to y at a speed of 40Km/h and returns by increasing his speed 50%. What is his average speed for both the trips?

a. 36km/h

b. 45km/h

c. 48km/h

d. 50km/h

Answer- 48km/h

Que- The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them.

a. 57.4

b. 57.5

c. 58.9

d. 59.1

Answer- 59.1

Que- The average of women and child workers in a factory was 15%yr. The average age of all the 16 children was 8yr and average age of women workers was 22 yrs if ten women workers were married then the number of unmarried women workers were________?

a. 16.0

b. 12.0

c. 8.0

d. 6.0

Answer- 6.0

Que- The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?

a. 31-Dec-1899

b. 31-Dec-1899

c. 31-Dec-1899

d. 31-Dec-1899

Answer- 31-Dec-1899

Que- In an examination a pupil’s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?

a. 8.0

b. 9.0

c. 10.0

d. 11.0

Answer- 11.0

Que- The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is__________________?

a. 20.0

b. 21.0

c. 22.0

d. 23.0

Answer- 21.0

Que- The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?

a. 45.0

b. 50.0

c. 51.4 approx.

d. 54.6 approx.

Answer- 51.4 approx.

Que- The average age of a husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is___________?

a. 19 years

b. 23 years

c. 28.5 years

d. 29.3 years

Answer- 19 years

Que- A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 6 runs. His new average is_____________?

a. 48 runs

b. 52 runs

c. 55 runs

d. 60 runs

Answer- 48 runs

Que- The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average of the team?

a. 23 years

b. 24 years

c. 25 years

d. None of these

Answer- 23 years

Que- The average monthly salary of 20 employees in an organisation is Rs. 1500. If the manager’s salary is added, then the average salary increases by Rs. 100. What is the manager’s monthly salary?

a. Rs. 2000

b. Rs. 2400

c. Rs. 3600

d. Rs. 4800

Answer- Rs. 3600

Que- The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is____________?

a. Rs. 3500

b. Rs. 4000

c. Rs. 4050

d. Rs. 5000

Answer- Rs. 4000

Que- The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?

a. 17 kg

b. 20 kg

c. 26 kg

d. 31 kg

Answer- 31 kg

Que- The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is____________?

a. 11 years

b. 14 years

c. 15 years

d. 15 2/7 years

Answer- 11 years

Que- A pupil’s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is___________?

a. 10.0

b. 20.0

c. 40.0

d. 73.0

Answer- 40.0

Que- The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?

a. 35.2

b. 36.1

c. 36.5

d. 39.1

Answer- 36.5

Que- If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new number is___________?

a. 30.0

b. 40.0

c. 70.0

d. 90.0

Answer- 40.0

Que- In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the rate in the remaining 40 overs to reach the target of 282 runs?

a. 6.25

b. 6.5

c. 6.75

d. 7.0

Answer- 6.25

Que- The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?

a. 2.0

b. 4.0

c. 70.0

d. 76.0

Answer- 76.0