the cost of 2 pen is rs 90 what is cost of such 7 pen
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0
Answer:
315 is correct answer cost of one pen is 45
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1
Answer:
cost of 7 pen = x
2 : 90 :: 7 : x
Product of extremes = Product of Means
2x = 90 × 7
2x = 630
x = 630/2
x = 315
= ₹315
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