During her shopping trip, Jen bought three different types of crayons, K, L and M in the ratio of 5 : 3 : 9. She decided to sell them at the prices listed as shown.
Crayon K : $1.60
Crayon L : $0.80
Crayon M : $0.50
Given that Jen bought a total 493 crayons, how much did Jen collect from the sale of all the crayons?
|
Crayon K |
Crayon L |
Crayon M |
Total |
Ratio of crayon |
5 u |
3 u |
9 u |
17 u |
Value of each crayon |
$1.60 |
$0.80 |
$0.50 |
|
17 u = 493
1 u = 493 ÷ 17 = 29
Number of Crayon K
= 5 x 29
= 145
Number of Crayon L
= 3 x 29
= 87
Number of Crayon M
= 9 x 29
= 261
Total revenue
= 145 x 1.60 + 87 x 0.80 + 261 x 0.50
= 232.00 + 69.60 + 130.50
= $432.10
Answer(s): $432.10