a shopkeeper bought two watch for rs.400. he sold them to gain 5% on one and loss 5% on the other. calculate his final gain or loss percent if the selling price of both watches are the same.
a shopkeeper bought two watch for rs.400. he sold them to gain 5% on one and loss 5% on the other. calculate his final gain or loss percent if the selling price of both watches are the same.
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Cost of 2 watches = Rs.400
Cost of 1 watch = Rs. 400÷2
= Rs. 200
He sold first watch with a profit of 5%(given)
= 5% of 200
= 5/100 × 200
= Rs. 10
= Rs.( 200+10)
Selling price of the first watch with a profit= Rs. 210
He sold second watch with a loss of 5%(given)
= 5% of 200
= 5/100× 200
= Rs. 10
= Rs. ( 200-10)
Selling price of the second watch with a loss= Rs. 190