During her shopping trip, Emma bought three different types of crayons, U, V and W in the ratio of 5 : 3 : 9. She decided to sell them at the prices listed as shown.
Crayon U : $1.25
Crayon V : $0.80
Crayon W : $0.30
Given that Emma bought a total 459 crayons, how much did Emma collect from the sale of all the crayons?
|
Crayon U |
Crayon V |
Crayon W |
Total |
Ratio of crayon |
5 u |
3 u |
9 u |
17 u |
Value of each crayon |
$1.25 |
$0.80 |
$0.30 |
|
17 u = 459
1 u = 459 ÷ 17 = 27
Number of Crayon U
= 5 x 27
= 135
Number of Crayon V
= 3 x 27
= 81
Number of Crayon W
= 9 x 27
= 243
Total revenue
= 135 x 1.25 + 81 x 0.80 + 243 x 0.30
= 168.75 + 64.80 + 72.90
= $306.45
Answer(s): $306.45