Races and Games - General Questions

In a 100 m race, A beats B by 20 m and B beats C by 40 m. By how many metres does A beat C?

In a 100 m race, A beats B by 40 m and B beats C by 40 m. By how many metres does A beat C?

In a 1000 m race, A beats B by 20 m and B beats C by 100 m. By how many metres does A beat C?

In a 1000 m race, A beats B by 25 m and B beats C by 100 m. By how many metres does A beat C?

In a 100 m race, A beats B by 10 m and B beats C by 25 m. By how many metres does A beat C?