Question
The selling price of the book is 30% more than the
selling price of the bag and the selling price of the bottle is 30% less than the selling price of the bag. If the selling price of the book is Rs.2700 more than the selling price of the bag, then what is the average of the selling price of the bottle and bag?Solution
Let SP of bag = 100x SP of book = 100x × (130/100) = 130x SP of bottle = 100x × (70/100) = 70x => 130x – 100x = 2700 => x = 90 SP of bottle = 70 × 90 = Rs.6300 SP of bag = 100 × 90 = Rs.9000 Average = (6300 + 9000)/2 = 15300/2 = 7650
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