For every good windbreaker that Justin sold, Justin earned $12. He sold defective windbreakers at a discount, which would cause him to lose $5 per defective windbreaker. In June, for every 20 windbreakers sold, 3 were defective. Justin earned $756 from the windbreakers sold.

1. How many more windbreakers sold were good than defective?
2. How much less money did he earn because of the defective windbreakers?

	Good	Defective	Total
Number	17 u	3 u
Value	+ 12	- 5
Total Value	204 u	- 15 u	$756

(a)
Amount that Justin earned 
= 204 u - 15 u
= 189 u

189 u = 756

1 u = 756 ÷ 189 = 4

Number of more windbreakers sold that were good than defective
= 17 u - 3 u
= 14 u
= 14 x 4
= 56

(b)
Number of defective windbreakers
= 3 u
= 3 x 4
= 12

Less amount earned for one defective jacket
= 12 + 5
= $17

Less amount earned because of all the defective windbreakers
= 12 x 17
= $204

Answer(s): (a) 56; (b) $204