Question

a pen cost 7 times as that of a pencil . If Raju buys 3 pencil and 2 pens and pays Rs34, what is the cost of a pencil and a pen

Answer 1

let the cost of pencil of be x
∴ the cost of the pen = 7x
 2 pens = 2 × 7 x
            = 14 x
3 pencils = 3 ×x
               = 3x
14x + 3x = rs. 34
17x = 34
x = 34/17
x = 2 ( cost of a pencil)
cost of a pen = 7 x
=> 7 × 2
=> 14 (cost of a pen) ( ans)

Answer 2

The correct answer is cost of pen is Rs 14 and cost of pencil is Rs 2.

Given: Cost of pen = 7 Cost of pencil.

Cost of 3 pencils and 2 pens = Rs 34.

To Find: Cost of a pencil and a pen.

Solution:

Cost of pen = 7 Cost of pencil.

Let cost of pen = 7x.

Let cost of pencil = x.

3(cost of pencil) + 2(cost of pen) = 34

3x + 2(7x) = 34

17x = 34

x = 2

Let cost of pen = 7x = 7 x 2 = Rs 14

Let cost of pencil = x = Rs 2.

Hence, cost of pen is Rs 14 and cost of pencil is Rs 2.

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