During her shopping trip, Marion bought three different types of crayons, W, X and Y in the ratio of 4 : 2 : 9. She decided to sell them at the prices listed as shown.
Crayon W : $1.40
Crayon X : $0.70
Crayon Y : $0.60
Given that Marion bought a total 510 crayons, how much did Marion collect from the sale of all the crayons?
|
Crayon W |
Crayon X |
Crayon Y |
Total |
Ratio of crayon |
4 u |
2 u |
9 u |
15 u |
Value of each crayon |
$1.40 |
$0.70 |
$0.60 |
|
15 u = 510
1 u = 510 ÷ 15 = 34
Number of Crayon W
= 4 x 34
= 136
Number of Crayon X
= 2 x 34
= 68
Number of Crayon Y
= 9 x 34
= 306
Total revenue
= 136 x 1.40 + 68 x 0.70 + 306 x 0.60
= 190.40 + 47.60 + 183.60
= $421.60
Answer(s): $421.60