Question

cost of pen is two and half times the cost of pencil .express this situation as a linear equation in two variables

Answer 1

Hi,

Let the cost of the pencil = Rs x

Cost of the pen = Rs y

Cost of the pen = two and half times

of the cost of the pencil

y = 2 1/2 × x

y = ( 5/2 )x

2y = 5x

I hope this helps you.

:)

Answer 2

The linear equation formed is 2y=5x

Given; that the cost of a pen is two and half times the cost of a pencil

To Find; express this situation as a linear equation in two variables

Solution; This question can be easily solved by letting the value of one thing as a variable and then expressing the other in the form of the first variable.

Let the cost of pencil = x

Le the cost of pen =y

Then according to the question

Cost of pen= two and half of cost of pencil=5x/2

y=5x/2

2y=5x

Hence the linear eqaution is 2y=5x

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