question_answer

A man had 100 kg of sugar, part of which he sold at 7% profit and the rest at 17% profit. He gained 10% on the whole. How much did he sell at 7% profit?

A)  65 kg               

B)  35 kg

C)  30 kg               

D)  70 kg

Correct Answer: D

Solution :

By Alligation Method \[\therefore \] The ratio = 7 : 3 \[\therefore \] The quantity of sugar sold at 7% profit             \[=\frac{100\times 7}{10}=70\,\,\text{kg}\]