Management Aptitude Test Sep 2013 Paper

(b) Let the total number of apples be 100, the vendor sold 60%, then per cent of apples remained = (100 - 60) = 40%
Now, 40% of 100 = $\frac{40\times 100}{100}$ = 40
He throws 15% of the remaining apples
= 15 % of 40 = $\frac{15\times 40}{100}$ = 6
Apples left with vendor = 40 - 6 = 34
On 2nd day, he sold 50% of apples and throw the remaining.
∴ 50% of 34 = $\frac{50\times 34}{100}$ = 17
∴ Total apples which vendor throw = (17 + 6) = 23
Then, required percentage = $\frac{23\times 100}{100}$ = 23%