Question

find the answer please ​

Answer 1

Step-by-step explanation:

Question :-

Cost of a pen is two and half times the cost of a pencil. Express this situation as a linear equation in two variable.

Solution :-

Let take the cost of pen be x and cost of pencil be y

According to the question,

cost of pen = two and half times the cost of pencil

${\bold{\sf{⟼ \: \: \: \: \: x \: = \: 2 \: \frac{1}{2} \: of \: y}}}$

${\bold{\sf{⟼ \: \: \: \: \: x \: = \: \frac{5}{2} \: y}}}$

${\bold{\sf{⟼ \: \: \: \: \: 2x \: = \: 5y}}}$

Answer 2

Step-by-step explanation:

let the cost of a pencil be x

then pen will be 2(1/2)x

but according to question the equation will be a linear equation with two variables

so, cost of pen will be 2(1/2)x =y =>5/2x=y =>2x=5y

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