During her shopping trip, Nora bought three different types of crayons, E, F and G in the ratio of 5 : 2 : 8. She decided to sell them at the prices listed as shown.
Crayon E : $1.50
Crayon F : $0.80
Crayon G : $0.30
Given that Nora bought a total 510 crayons, how much did Nora collect from the sale of all the crayons?
|
Crayon E |
Crayon F |
Crayon G |
Total |
Ratio of crayon |
5 u |
2 u |
8 u |
15 u |
Value of each crayon |
$1.50 |
$0.80 |
$0.30 |
|
15 u = 510
1 u = 510 ÷ 15 = 34
Number of Crayon E
= 5 x 34
= 170
Number of Crayon F
= 2 x 34
= 68
Number of Crayon G
= 8 x 34
= 272
Total revenue
= 170 x 1.50 + 68 x 0.80 + 272 x 0.30
= 255.00 + 54.40 + 81.60
= $391.00
Answer(s): $391.00