During her shopping trip, Gwen bought three different types of crayons, G, H and J in the ratio of 4 : 2 : 9. She decided to sell them at the prices listed as shown.
Crayon G : $2.70
Crayon H : $0.80
Crayon J : $0.40
Given that Gwen bought a total 510 crayons, how much did Gwen collect from the sale of all the crayons?
|
Crayon G |
Crayon H |
Crayon J |
Total |
Ratio of crayon |
4 u |
2 u |
9 u |
15 u |
Value of each crayon |
$2.70 |
$0.80 |
$0.40 |
|
15 u = 510
1 u = 510 ÷ 15 = 34
Number of Crayon G
= 4 x 34
= 136
Number of Crayon H
= 2 x 34
= 68
Number of Crayon J
= 9 x 34
= 306
Total revenue
= 136 x 2.70 + 68 x 0.80 + 306 x 0.40
= 367.20 + 54.40 + 122.40
= $544.00
Answer(s): $544.00