41.

A man can row against the current three-fourth of a kilometre in 15 minutes and returns the same distance in 10 minutes. The ratio of his speed to that of the current is

• 3 : 5

• 5 : 3

• 1 : 5

• 1 : 5

Two places A and B are 100 km apart on a highway. One car starts from A and another from B at the same time. If the cars travel in the same direction at a constant speed, they meet in 5 hours. If the cars travel towards each other, they meet in 1 hour. What is the speed of the car running faster?

• 60 km/hr

• 50 km/hr

• 40 km/hr

• 40 km/hr

A can complete a piece of work in 12 days. B is 60% more efficient than A. The number of days, that B will take to complete the same work is

• 6

• 

• 8

• 8

Two pipes can fill an empty tank separately in 24 minutes and 40 minutes respectively and a third pipe can empty 30 gallons of water per minute. If all the three pipes are open, empty bank becomes full in one hour. The capacity of the tank (in gallons) is

• 800

• 600

• 500

• 500

A batsman in his 12th innings makes a score of 63 runs and thereby increases his average score by 2. The average of his score after 12th innings is

• 41

• 42

• 34

• 34

The greatest number, that divides 43, 91 and 183 so as to leave the same remainder in each case is

• 9

• 8

• 4

• 4

The sum of the areas of the 10 squares, the lengths of whose sides are 20 cm, 21 cm,....29 cm respectively is

• 6085 cm²

• 8555 cm²

• 2470 cm²

• 2470 cm²

The square root of
 is

• 15

• 45

• 75

• 75

If  then  is equal to

• 4

• 8

• 9

• 9