Question:If a man reduces the selling price of a fan from Rs. 400 to Rs. 380 his loss increases by 20%. The cost price of the fan is : 

A Rs. 600 
B Rs. 500 
C Rs. 480 
D None 

+ Answer
B 

+ Explanation
Let C.P. be Rs. x.

Two losses are (x - 400) and (x - 380)

Increase in loss (x - 380) - (x - 400) = 20

`(20)/(x - 400) xx 100 = 20 => x - 400`

`= 100 => x = 500`

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Irin Moni

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