During her shopping trip, Gem bought three different types of crayons, T, U and V in the ratio of 4 : 2 : 9. She decided to sell them at the prices listed as shown.
Crayon T : $2.30
Crayon U : $0.80
Crayon V : $0.60
Given that Gem bought a total 570 crayons, how much did Gem collect from the sale of all the crayons?
|
Crayon T |
Crayon U |
Crayon V |
Total |
Ratio of crayon |
4 u |
2 u |
9 u |
15 u |
Value of each crayon |
$2.30 |
$0.80 |
$0.60 |
|
15 u = 570
1 u = 570 ÷ 15 = 38
Number of Crayon T
= 4 x 38
= 152
Number of Crayon U
= 2 x 38
= 76
Number of Crayon V
= 9 x 38
= 342
Total revenue
= 152 x 2.30 + 76 x 0.80 + 342 x 0.60
= 349.60 + 60.80 + 205.20
= $615.60
Answer(s): $615.60