1.

A manufacturer sells a pair of glasses to a wholesale dealer at a profit of 18%. The wholesaler sells the same to a retailer at a profit of20%. The retailer in turn sells them to a customer for ₹30.09, thereby earning a profit of25%. The cost price for the manufacturer is

Answer»

₹15
₹16
₹17
₹18

Solution :Let thecost priceof manufacture is = P
SELLINGPRICE of themamufacture `= P + P XX (18)/(100) = (59P)/(50)`
Wholesaler selling price `= (59P)/(50) + (59P)/(50)xx (20)/(100)`
`= (59P)/(50) + (59P)/(250) = (345P)/(250)`
Retailer sellingprice `= (345P)/(250) + (345P)/(250)xx (25)/(100)`
`= (345P)/(250) + (177P)/(500) = (805P)/(500)`
Now,` (805P)/(500) = 30.09`
`rArr P = 17`


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