The system of equations can be used to find the number of pencils (x) and pens (y) he bought are as follows:
x + y = 6
x + 1.50y = 7
How to form system of equation?
A pencil at a stationery store costs $1, and a pen costs $1.50.
Therefore,
x = number of pencil
y = number of pen bought
Therefore, He bought a total of 6 items.
Hence,
x + y = 6
Stefan spent $7 at the store. Therefore,
1x + 1.50y = 7
x + 1.50y = 7
Let's combine the equation.
x + y = 6
x + 1.50y = 7
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