"The number of skirts is two less than twice the number of pants purchased. Also, the number of skirts is four less than four times the number of pants purchased”. How many pants were purchased?
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Solution

The correct option is A 1
Let us denote the number of pants by x and the number of skirts by y. Then the equations formed are :
$y = 2 x - 2$ ... (1)
$y = 4 x - 4$ .... (2)

$y = 2 x - 2$

x y

0 -2

1 0

$y = 4 x - 4$

x y

0 -4

1 0

Graphically,

From the graph, x = 1, y = 0
Thus, number of pants purchased is 1.

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