5 packs of pens containing 10 in each cost Rs 250.What is the cost of 21 pens?
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Answer:
₹105
Step-by-step explanation:
No. of Packs = 5
No. of Pens in each = 10
Total No. of Pens = 5×10= 50
Cost of 50 pens = 250
Cost of 1 pen = 250÷50 = 5
Cost of 21 pens = ₹ (5×21) = 105
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