A toy merchant announces 25\% rebate in prices of balls. If one needs to have a rebate of ₹ 40, then how many balls each costing ₹ 32, he should purchase?
(a)5
(b)6
(c)7
(d)10
Answer
Answer (as printed): A
Explanation
Rebate on one ball $=25 \%$ of $₹ 32=₹\left(\frac{25}{100} \times 32\right)=₹ 8$. $$\text { ∴ } \text { Required number of balls }=\frac{40}{8}=5 .$$
Explanation as extracted from the printed page; notation may be imperfect.