A defeats B by 10 metres in a 100-metre race. B defeats C by 10 metres in a 100-metre race. By what distance will A defeat C in a 100-metre race?
Answer & explanation
Correct answer: option 1
According to the question,
When A covers 100 m, B covers 90 m
And when B covers 100 m, C covers 90 m
So, the distance ratio of A to B and B to C are 10 : 9 and 10 : 9
A : B : C = 100 : 90 : 81
So, A beats C by 100 - 81
= 19 m
So , A beats C by 19 m