Question

Week?

3. Mr. Taber earned $120 for completing
15 pieces. Write and solve a proportion
to show how much he would earn at the
same rate for completing 42 pieces.

Answer 1

$336

Explanation:

Given he earned $120 for completing the 15 pieces

That’s

$120 = 15

At the same rate he’ll earn y amount for completing 42 pieces

That’s

$y = 42 pieces

Therefore

120 = 15

y = 42

Cross multiply

y x 15 = 120 x 42

15y = 5040

Divide both sides by 15

15y/15 = 5040/15

y = 336

y = $336

He’d earn $336 for completing 42 pieces at the same rate