A, B, C and D have Rs. 40, Rs. 50, Rs. 60 and Rs. 70 respectively when they go to visit a fair. A spends Rs. 18, B spends Rs. 21, C spends Rs. 24 and D spends Rs. 27. Who has done the highest expenditure proportionate to his resources ?

Solution (By Examveda Team)

Ratio of the expenditures of A, B, C, D are as under:
$$\eqalign{ & {\text{A}} \to \frac{{18}}{{40}} = \frac{9}{{20}} = 0.45 \cr & {\text{B}} \to \frac{{21}}{{50}} = 0.42 \cr & {\text{C}} \to \frac{{24}}{{60}} = 0.4 \cr & {\text{D}} \to \frac{{27}}{7} = 0.385 \cr} $$
Clearly, A has done the highest expenditure proportionate to his resources.