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 = ?

Solution (By Examveda Team)

According to the question,

A		B		C
10	\[\xrightarrow{{20\% {\text{ profit}}}}\]	12	\[\xrightarrow{{25\% {\text{ profit}}}}\]	12 + 3	= 15 \[ \to \] 225

$$\eqalign{ & \therefore {\text{1 unit}} = {\text{15}} \cr & \therefore {\text{10 units}} = 10 \times 15 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = {\text{Rs}}{\text{.150}} \cr} $$