A sells a bicycle to B at a profit of 20%. B sells it to C at a profit of 25%. If C pays Rs. 225 for it, the cost price of the bicycle for A is:________?

A. Rs. 110
B. Rs. 120
C. Rs. 125
D. Rs. 150

Explanation:

125% of 120% of A = 225

125/100 * 120/100 * A = 225
A = 225 * 2/3 = 150.