Question

Elena has $5 and sells pens for $1.50 each. She wants to

have enough money to buy a $20 shirt and still have money
left over

Answer 1

She will need to sell more than 10 pens to have enough money to buy a $20 shirt and still have money.

Explanation:

1.5x + 5 > 20

-5 +5

1.5x > 15

/1.5 /1.5

x > 10

Answer 2

10 pens

Explanation:

Find out how much pens she needs to sell to get $15, to get $15, exclude out how much Elena has.

$20 - $5 = $15

Now divide.

$15.00 ÷ $1.50 = 10 pens