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There are some books inside a bag. 40% of total books are Red and rest 60 are Green. The average price of green books is Rs.120 and the average price of Red books is Rs.100. Find the average price of books inside a bag.1. Rs.1122. Rs.1203. Rs.1154. Rs.985. Rs.105 |
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Answer» Correct Answer - Option 1 : Rs.112 Given: Let total number of books inside a bag be N. Total number of Red books = 40/100 × N = 2N/5 Total number of Green books = N - 2N/5 = 3N/5 ⇒ 3N/5 = 60 ⇒ N = 100 Total number of Red books = 2/5 × 100 = 40 Total price of Red books = 40 × 100 = Rs.4000 Total price of Green books = 60 × 120 = Rs.7200 Total price of 100 books = 4000 + 7200 = Rs.11200 ∴ Average price of books inside a bag = 11200/100 = Rs.112 |
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