If 1.5 x a = 0.04 x b then the value of (b

If 1.5 x a = 0.04 x b then the value of (b - a) / ( b + a) is ?

1. 730 / 77
2. 73 / 77
3. 7.3 / 77
4. None of thesse

Correct Option: B

a / b = 0.04 / 1.5
= 4 / 150
= 2 / 75

∴ Given Exp. (b - a) / ( b + a)
= (1- a/b ) / (1 + a/b)
= (1- 2 / 75) / (1 + 2 / 75)
= ( 73/75 ) / ( 77/75)
= 73/77

Fractions

Aptitude

Correct Option: B