Anil gave a certain amount to his son Vimal for buying some pens and pencils. With this amount Vimal can purchase either 10 pens or 30 pencils. He bought a chocolate with 10% of total amount and purchased 7 pens. How many pencils he can purchase with rest of the money.

Anil gave a certain amount to his son Vimal for buying some pens and pencils. With this amount Vimal can purchase either 10 pens or 30 pencils. He bought a chocolate with 10% of total amount and purchased 7 pens. How many pencils he can purchase with rest of the money. Correct Answer 6

Let, total amount Vimal 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 × 7 = Rs. 21

Amt. left = 30 - (21 + 3) = Rs. 6

Number of pencils he can purchase = 6

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