Races and Games - General Questions

A can run 500 m in 42 seconds and B in 48 seconds. By how many metres does A beat B?

A runs 1 2/3 times as fast as B. If A gives B a start of x metres so that the race of 1000 m ends in a dead heat, what is x?

In a 1000 m race, A beats B by 25 m and B beats C by 40 m. By how many metres does A beat C?

A runs 1 2/3 times as fast as B. If A gives B a start of x metres so that the race of 500 m ends in a dead heat, what is x?

A can run 200 m in 22 seconds and B in 32 seconds. By how many metres does A beat B?