Question

The cost of a pen in 2 more than the cost of a notebook .The total cost of 2 pens and 3 notebooks is 84 .Find the cost of a pen.​

Answer 1

Step-by-step explanation:

Let, the cost of notebook = x

According to the question, the cost of pen= 2x

So, cost of 3 notebooks = 3x

Cost of 2 pens = 2 ( 2x )

= 4x

As per the question,

3x + 4x = 84

7x = 84

x = 84/7

= Rs. 12/-

Therefore, cost of notebook = Rs. 12/-

Cost of pen = 2x

= 2 x 12  = Rs. 24/-

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Answer 2

Answer:

Step-by-step explanation

Step-by-step explanation

Let, the cost of notebook = x

According to the question, the cost of pen= 2x

So, cost of 3 notebooks = 3x

Cost of 2 pens = 2 ( 2x )

= 4x

As per the question,

3x + 4x = 84

7x = 84

x = 84/7

= Rs. 12/-

Therefore, cost of notebook = Rs. 12/-

Cost of pen = 2x

= 2 x 12  = Rs. 24/-

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