Question

a, b and c are the three contestants in one km race. if a can give b a start 40 metres and a can give c a start of 64 metres. how many metres start can b give

Answer 1

$\Large{\fcolorbox{grey}{yellow}{ \red{Correct} \pink{Answer} is :}}$

25 m ✔

$\Large\tt\pink{\underline{Explanation}}$

While A covers 1000 m,

B covers (1000 - 40) m = 960 m

And C covers (1000 - 64) m = 936 m.

☞ When B covers 960 m, C covers 936 m.

☞ When B covers 1000 m, C covers

$\large\bold \red{= ( \frac{936}{960} \times 1000)}$

∴ B can give C a start of (1000 - 975) = 25 m.