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cost of 15 pencil is equal to the cost of 5 pens if cost of one pen is 30 find the cost of seven pencil and four pen. |
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Answer» Cost of 1 pen =30Cost of 5 pens=30*5=150RsCost of 15 pencils=150 RsCost of 1 pencil=150/15=10 RsCost of 7 pencils=10*7=70RsCost of 4 pens=30*4=120Rs |
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