Question

The cost price of $30$ chairs is equal to the selling price of $25$ chairs. Find the gain percent.

Answer 1

CP of 1 chair be Rs. 1

CP of 30 chairs be Rs.30

Given CP of 30 chairs

= SP of 25 chairs

SP of 25 chairs = Rs. 30

CP of 25 chairs = Rs. 25

Gain = SP - CP = 30-25

= 5

Gain % $=\frac{5}{25}\times 100$

= 20%