During her shopping trip, Dana bought three different types of crayons, V, W and X in the ratio of 4 : 2 : 7. She decided to sell them at the prices listed as shown.
Crayon V : $2.05
Crayon W : $0.80
Crayon X : $0.30
Given that Dana bought a total 442 crayons, how much did Dana collect from the sale of all the crayons?
|
Crayon V |
Crayon W |
Crayon X |
Total |
Ratio of crayon |
4 u |
2 u |
7 u |
13 u |
Value of each crayon |
$2.05 |
$0.80 |
$0.30 |
|
13 u = 442
1 u = 442 ÷ 13 = 34
Number of Crayon V
= 4 x 34
= 136
Number of Crayon W
= 2 x 34
= 68
Number of Crayon X
= 7 x 34
= 238
Total revenue
= 136 x 2.05 + 68 x 0.80 + 238 x 0.30
= 278.80 + 54.40 + 71.40
= $404.60
Answer(s): $404.60