Races and Games

1

In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:

2

A and B take part in 100 m race. A runs at 5 kmph. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is:

3

In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:

4

In a 100 m race, A beats B by 10 m and C by 13 m. In a race of 180 m, B will beat C by:

5

At a game of billiards, A can give B 15 points in 60 and A can give C to 20 points in 60. How many points can B give C in a game of 90?