Raman gave a certain amount to his son Ritesh for buying some pens and pencils. With this amount Ritesh can purchase either 10 pens or 30 pencils. Ritesh bought a chocolate with 10% of total amount and purchased 7 pens. How many pencils he can purchase with rest of the money.
Let, total amount Ritesh has = Rs. 30 (LCM of 10 and 30). Cost of 1 pen = Rs. 3 and cost of 1 pencil = Re. 1 Amount spent on chocolate = 10% of 30= Rs.3 Amt. spent on pens= 3 x 7 = Rs.21 Amt. left = 30– (21+ 3) = Rs.6 No. of pencils he can purchase= 6
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