Question

7. The cost of 5 pencils is equal to the cost of 2 ballpoints. Write a linear
equation in two variables to represent this statement. (Take the cost of
a pencil to be *x and that of a ballpoint to be *y).
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Answer 1

Answer:

$5x-2y=0$

Step-by-step explanation:

The cost of a pencil is $x$ and the cost of a ballpoint pen is $y$

According to the question,

Cost of 5 pencils = cost of 2 ballpoints

=> 5 * cost of one pencil = 2 * cost of one ballpoint

$=> 5*x = 2*y\\=> 5x - 2y = 0$