During her shopping trip, Roshel bought three different types of pens, B, C and D in the ratio of 5 : 2 : 8. She decided to sell them at the prices listed as shown.
Pen B : $1.80
Pen C : $0.80
Pen D : $0.50
Given that Roshel bought a total 570 pens, how much did Roshel collect from the sale of all the pens?
|
Pen B |
Pen C |
Pen D |
Total |
Ratio of pen |
5 u |
2 u |
8 u |
15 u |
Value of each pen |
$1.80 |
$0.80 |
$0.50 |
|
15 u = 570
1 u = 570 ÷ 15 = 38
Number of Pen B
= 5 x 38
= 190
Number of Pen C
= 2 x 38
= 76
Number of Pen D
= 8 x 38
= 304
Total revenue
= 190 x 1.80 + 76 x 0.80 + 304 x 0.50
= 342.00 + 60.80 + 152.00
= $554.80
Answer(s): $554.80