For every good dress that Billy sold, Billy earned $17. He sold defective dresses at a discount, which would cause him to lose $2 per defective dress. In March, for every 25 dresses sold, 5 were defective. Billy earned $3300 from the dresses sold.
- How many less dresses sold were defective than good?
- How much less money did he earn because of the defective dresses?
|
Good |
Defective |
Total |
Number |
20 u |
5 u |
|
Value |
+ 17 |
- 2 |
|
Total Value |
340 u |
- 10 u |
$3300 |
(a)
Amount that Billy earned
= 340 u - 10 u
= 330 u
330 u = 3300
1 u = 3300 ÷ 330 = 10
Number of less dresses sold that were defective than good
= 20 u - 5 u
= 15 u
= 15 x 10
= 150
(b)
Number of defective dresses
= 5 u
= 5 x 10
= 50
Less amount earned for one defective jacket
= 17 + 2
= $19
Less amount earned because of all the defective dresses
= 50 x 19
= $950
Answer(s): (a) 150; (b) $950