When 5% is lost in grinding wheat, a country has to import 20 million bags; but when only 2% is lost, it has to import only 15 million bags. Find the quantity of wheat, which grows in the country?

A. 133 1/3 m
B. 150 m
C. 106 2/3 m
D. 166 2/3 m

Explanation:

5% – 2% = 3%
3% —- 5
100% —- ? => 166 2/3