12. Rohit buys 10 pens, all of one brand, for * 150 and Manoj buys 14 pens, of some other
brand, for 168. Who bought the pens cheaper ?
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Step-by-step explanation:
cost of each pen by rohit =150/10=15
cost of each pen by manoj =168/14=12
so manoj bought chep pens
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