7. A pencil box contains 2 pens that cost ta, 2 pencils that cost band an eraser that costs &

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August 2023 1 8 Report

7. A pencil box contains 2 pens that cost ta, 2 pencils that cost band an eraser that costs & c. If the cost of the pencil box is d, find the total cost of 2a + b pencil boxes.

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Bhai9827v

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Step-by-step explanation:

Cost of one pencil = Rs 2

Cost of one fountain pen = Rs 15

Cost of x pencils = 2x

Cost of y fountain pens = 15y

So the cost of x pencils and y fountain pens = Rs (2x + 15y)

Hence, the cost of x pencils and y fountain pens is Rs (12x + 15y).

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