Question

Jensen goes to the store with $4. He buys 3 pencils for $0.70 each and

some erasers. Each eraser costs $0.50. Enter the maximum number of
erasers he can buy.

Answer 1

3 erasers.

Explanation:

Let p = pencils and e = erasers. Since we know that Jensen has $4, we can set up the following inequality and solve for e.

0.70p + 0.50e ≤ 4

0.70(3) + 0.50e ≤ 4

2.10 + 0.50e ≤ 4

0.50e ≤ 1.90

e ≤ 3.8

Since erasers are usually bought as whole items, the maximum amount of erasers Jensen can buy is 3.