The marked price of a calculator is Rs 1,800. The shopkeeper allows 10% discount and still makes 8% profit. At what price did the shopkeeper purchase the calculator?solution;Given,Marked price of a calculator (MP) = Rs 1,800Discount percentage allowed (d) = 10%Profit percentage (P) = 8%...

The marked price of a calculator is Rs 1,800. The shopkeeper allows 10% discount and still makes 8% profit. At what price did the shopkeeper purchase the calculator?

solution;

Given,

Marked price of a calculator (MP) = Rs 1,800

Discount percentage allowed (d) = 10%

Profit percentage (P) = 8%

To find: CP = ?

We know,

Selling Price (SP) = MP – d/100×MP

= 1800 – 10/100×1809

= 1800 – 180

= Rs 1620

And,

Cost Price (CP) = (100×SP)/(100+P%)

= (100×1620)/(100+8)

= 162000/108

= Rs 1500

Therefore, the required cost price of the calculator is Rs 1500.