A shopkeeper has 2220 kg of rice. A part of which he sells at a 20% profit and the rest at a 12% profit. He gains 18% on the whole. The quantity (in kg) sold at a 12% profit is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 555.
Total rice = 2220 kg
By using allegation method,
20 12
18
6 : 2
3 : 1
(3 + 1) = 2220
4 = 2220
1 = 555 kg
The quantity (in kg) sold at a 12% profit is = 555 kg