Question

Finn has, at most, $20 to spend on school supplies. If he has to buy 6 pencils that are fifty cents each, at most, how much does he have left to spend on other supplies? Write and solve an inequality to model this situation.

Answer 1

x+3≤20

x≤17

Explanation:

let the amount of money left for misc expenditures = x

Number of pencils bought = 6

cost of each pencil = $0.50

Total expense on pencil = 6 x $0.50 = $3

Total expenditure =x+3

Maximum expenses allowed = $20

Hence

Total expenditure must be less than or equal to $20

Hence

x+3≤20

Subtracting 3 from both sides

x≤17