Ravish takes `2 1/5` minutes to walk across the school ground. Rahul takes `7/4` minutes to do the same. Who takes less time and by what fraction?

There is a circular path around a sports field. Priya takes 18 minutes to drive on round of the field, while Ravish takes 12 minutes for the same. Suppose they both start at the same point and at the same time, and go in the same direction. After how many minutes will they meet again at the starting point?

One man takes 1 minute to raise a box to a height of 1 metre and another man takes 1/2 minute to do so. The energy of the two is

Walking at a constant rate, Stuart takes 24 minutes to walk to the nearest bus stop and (1)/(3) of that time to walk to the movie theater. If takes him half the time to walk to school than it does for him to walk to the movie theater. How many minutes does it take stuart to walk to school?

Aimee takes 6 minutes to pack a box and Brianna takes 5 minutes to pack a box. How many hours will it take them to pack 110 boxes?

There is a circular path around a sports field. Soma takes 18 minutes to drive one round of the field, while Ravi takes 12 minutes for the same. Suppose they both start at the same point and at the same time, and go in the same direction. After how many minutes will they meet again at the starting point?

An electric bettle has two coils. When one coil is switched on it takes 15 minutes and the other takes 30 minutes to boil certain mass of water. The ratio of times taken by them, when connected in series and in parallel to boil the same mass of water is :

There are two separate coils in a heater . If one col is used then it takes 20 minutes to boil a given amount of water completely. But when its other coil is used then it takes 5 minutes to boil the same amount of water. Calculate the time taken to boil the same amount of water using the same source when the two coils are connected (1) in series and (2) in parallel.

If takes 4 friends 24 minutes to wash all the windows in Maria's house. The friends all work at the same rate. How long would it take 8 friends working at the same rate, to wash all the windows in Maria's house?

Anupama takes 125 minutes in walking a distance of 100 metre. What distance would she cover in 315 minutes?