Question

☆ content quality required☆
_______________________________________


In racing over a given distance d at a uniform speed, A can beat B by 20 yards, B can beat C by 10 yards, and A can beat C by 28 yards. Then d, in yards, equal

A. not determined by the give information
B. 58
C. 100
D. 116
E. 120

Answer 1

a can beat b by 20 yards,
a can beat c by 28 yards,
b can beat c by 10 yards,

so, when a is on the finish line b is 20 yards
back and c is 28 yards back.

hence, 20 yards before the finish line b is
8 yards ahead of c, and since the final difference between b and c is 10 yards, then b gains 2 yards every 20 yards. to gain the final difference of 10=2*5=100 yards b should run total of 20*5=100 yards

answer: c.

hope it's clear

Answer 2

Hay!!

Dear Friend -ROSHAN

We know that in given question
A beat B by 20
B beat C by 10
A beat C by 28

Then,

We know that when A will be finished line B => 20 yards back and C => 28 yards back.

So,

20 yards before Will be finished line B is 8 yards ahead of C, and since the last difference between b and c is 10 yards,

then,
B gains 2 yards every 20 yards. => 10=2×5=100 yards

B should run total of 20×5=100 yards

Hence, your answer is C. 100 yard

I hope dear Its help you