Mariam bought two fans for Rs 3605. She sold one at a profit of 15% and the other at a loss of 9%. If Mariam obtained the same amount for each fan, find the cost price of each fan.
Cost price of 2 fans = Rs.3605
let cost price of 1 fan = Rs.x
then CP of other fan would be = Rs. 3605 – x
let first fan is sold at profit and second at a loss.
Selling price of first fan = 
Selling price of second fan = 
We have ,
= 
= 
= 
Cost price of one fan = Rs.1592.50
Cost price of second fan = 3605 – 1592.50 = Rs.2012.50
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