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 \[=\frac{100\times 7}{10}=70\,\,\text{kg}\]