During her shopping trip, Wendy bought three different types of crayons, L, M and N in the ratio of 4 : 2 : 9. She decided to sell them at the prices listed as shown.
Crayon L : $1.50
Crayon M : $10
Crayon N : $0.40
Given that Wendy bought a total 540 crayons, how much did Wendy collect from the sale of all the crayons?
|
Crayon L |
Crayon M |
Crayon N |
Total |
Ratio of crayon |
4 u |
2 u |
9 u |
15 u |
Value of each crayon |
$1.50 |
$10 |
$0.40 |
|
15 u = 540
1 u = 540 ÷ 15 = 36
Number of Crayon L
= 4 x 36
= 144
Number of Crayon M
= 2 x 36
= 72
Number of Crayon N
= 9 x 36
= 324
Total revenue
= 144 x 1.50 + 72 x 10 + 324 x 0.40
= 216.00 + 720.00 + 129.60
= $1065.60
Answer(s): $1065.60