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:
Rs. 110
Rs. 120
Rs. 125
Rs. 150
Explanation:
According to the question, 125% of 120% of A = 225.
=> 125/100 $\times$ 120/100 $\times$ A = 225
=> A = 225 $\times$ 2/3 = 150.