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प्रश्न
A book seller sold a box of 10 pencils for Rs. 80 and incurred a loss. Had he sold it for Rs. 98, his gain would have been twice the loss he incurred earlier. The cost price of the box of pencils is:
विकल्प
Rs. 84
Rs. 86
Rs. 88
Rs. 90
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उत्तर
Rs. 86
Explanation:
Let the cost price of the pencil box is ₹ x
Then, loss = (x − 80)
Profit = (98 − x) = 2 (x − 80)
3x = 98 + 160
`"x"=258/3`= 86
Hence, the cost price of the pencil box = Rs. 86
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