Question

by selling a bed sheet for Rs 640 A shopkeeper earns a profit of 28% how much did it cost to shopkeeper

Answer 1

500 is the cost price

Answer 2

Given,
SP of the bedsheet = Rs. 640
Gain = 28%
:. CP = 100/(100+gain%)*SP
= 100/128*640
= Rs. 500
Hence its CP for the shopkeeper was Rs. 500