Question

Mr. W is having a yard sale, where he is selling iPad chargers and wireless keyboards. At the

end of the day, he knows he sold a maximum of 14 items, and he earned a total of $342. If he
charged $18 for each iPad charger (x) and $38 for each keyboard (y), write a system of
inequalities that models this situation,

Answer 1

Answer: the system of inequalities are

x + y ≤ 14

18x + 38y = 342

Explanation:

Let x represent the number of iPad chargers sold.

Let y represent the number of keyboards sold.

At the end of the day, he knows he sold a maximum of 14 items. This is expressed as

x + y ≤ 14

If he

charged $18 for each iPad charger (x) and $38 for each keyboard (y) and earned a total of $342, the expression would be

18x + 38y = 342