Question
Pine Tree Publications sold a Textbook for Rs. 120 and
made a profit of 25% on its CP and sold an Encyclopedia for Rs. 720 and made a profit of 15% on its CP. If the publication sold the Textbook for Rs. 144, then find at what price should the Encyclopedia be sold to make a profit of 20% on both the books?Solution
CP of Textbook = 120/125 × 100 = Rs. 96 CP of Encyclopedia = 690/115 × 100 = Rs. 600 For 20% profit on both, = (96 + 600) × 120/100 = Rs 835.2 Encyclopedia should be sold, = 835.2 – 144 = Rs. 691.2
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