The time taken by Rohan in five different races to run a distance of 500 m was 3.20 minutes, 3.37 minutes, 3.29 minutes, 3.17 minutes and 3.32 minutes. Find the average time taken by him in the races.

A picture hall has seats for 820 persons. At a recent film show, one usher guessed it was full, another that it was full. The ticket office reported 648 sales. Which usher (first or second) made the better guess?

For the celebrating children’s students of Class VII bought sweets for ₹ 740.25 and cold drink for ₹ 70. If 35 students contributed equally what amount was contributed by each student?

A public sewer line is being installed along m of road. The supervisor says that the labourers will be able to complete 7.5 m in one day. How long will the project take to complete?

The weight of an object on moon is its weight on Earth. If an object weighs kg on Earth, how much would it weigh on the moon?