Competitive Quiz

A pipe can fill a bucket in 5 hours but due to a hole at the bottom it takes 6 hours to fill the bucket. How much time will it take to empty the bucket if it was full?

• 25 hours

• 30 hours

• 35 hours

• 40 hours

Two pipes A and B can fill a tank in 36 minutes and 45 minutes, another pipes C can empty the tank in 30 minutes. Pipes A and B are opened first and then 7 minutes later pipes C is also opened. Find the time taken to fill the tank.

• 40 mins

• 35 mins

• 42 mins

• 46 mins

Two pipes can fill a small tank in 7 hr and 8 hr respectively. A leakage was found when two pipes are opened simultaneously and due to leakage it took 16 min more to fill it up. How much time the leakage will take to empty the full tank?

• 56 hours

• 58 hours

• 50 hours

• 112 hours

How long will a boy take to run round a square field of side 35 meters, If he runs at the rate of 9 km/hr?

• 50 sec

• 52 sec

• 54 sec

• 56 sec

A speed of a train is 20 meters per second. It can cross a pole in 10 seconds. What is the length of a train?

• 200 m

• 150 m

• 250 m

• 300 m

A person goes from A to B at the speed of 40 kmph and comes back at the speed of 60 kmph. What is his average speed for the whole journey?

• 56 km/h

• 48 km/h

• 36 km/h

• 25 km/h

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

• 3.6

• 7.2

• 8.4

• 10

The ratio between the speeds of two trains is 7: 8. If the second train runs 400 km in 4 hours, then the speed of the first train is?

• 83.5 km/hr

• 84.5 km/hr

• 87.5 km/hr

• 86.5 km/hr

In what ratio must a grocer mix two varieties of cereals costing ₹15 and ₹20 respectively so as to get a mixture worth ₹16.50 per kg ?

• 3: 7

• 5 : 7

• 7 : 3

• 7:5

  Find the ratio in which rice at ₹7.20 a kg be mixed with rice at ₹5.70 a kg to produce a mixture worth ₹6.30 a kg.

• 1:3

• 2:3

• 3 : 4

• 4 : 5