2 pens cost as much as 5 pencils,1 pencil cost as much as 3 erases, 4 erasers cost as much as 3 books. if the cost of 1 pen is Rs 45. find the combined cost if a book?
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l think answer is 12rs for 3 books
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Step-by-step explanation:
1 pen cost = Rs 45.
1 pencil cost = (2 * 45)/5 = 18
1 eraser cost = 18/3 = 6
so 1 book cost = (4 *6)/3 = Rs. 8 Ans.
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