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Question

Vinod sold a watch to Alex at a gain of 12% and Alex had to sell it to Shweta at a loss of 5%. If Shweta paid Rs 1330 for it, how much did Vinod pay for the watch?

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Solution

SP of the watch for Alex= Rs 1330
Loss percentage for Alex = 5%

CP for Alex=SP×100100-loss%=1330×100100-5=13300095=Rs 1400

Now, SP for Vinod = CP for Alex = Rs 1400
Gain percentage of the watch for Vinod = 12%
CP of the watch for Vinod=SP×100100+gain %=Rs 1400×100100+12=Rs 140000112 = Rs 1250

Thus, Vinod paid Rs 1250 for the watch.

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