A man purchased some pens at ₹8 each and some pencils at ₹2.50 each. If the total number of pens and pencils purchased is '27' and their total cost ₹150. How many pencils did he buy?
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Answer:let no.of pens be x
Let no.of pencils be y
X+y=27
8x+2.5y=150
X=15
Y=12
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