Question

A shopkeeper marks the price of an calculator at 25% above cost price. He then allows a discount of 15% of the marked price and he still makes profit Rs.900. Find out the marked price of an calculator .​

Answer 1

Rs. 18000

Explanation:

`x(1 + 25\%) \: (1 - 15\%) - x = 900`

`1.0625x - x = 900`

`0.0625x = 900`

`x = 14400`

•••••

`14400 * (1 + 25\%)`

`\: \: \: \: \: \: \: \: = 14400 * 1.25`

`\: \: \: \: \: \: \: \: =Rs. 18000`

The marked price of a calculator is
`\boxed{\green{Rs. 18000}}`