During her shopping trip, Esther bought three different types of crayons, H, J and K in the ratio of 5 : 3 : 7. She decided to sell them at the prices listed as shown.
Crayon H : $1.50
Crayon J : $10
Crayon K : $0.30
Given that Esther bought a total 420 crayons, how much did Esther collect from the sale of all the crayons?
|
Crayon H |
Crayon J |
Crayon K |
Total |
Ratio of crayon |
5 u |
3 u |
7 u |
15 u |
Value of each crayon |
$1.50 |
$10 |
$0.30 |
|
15 u = 420
1 u = 420 ÷ 15 = 28
Number of Crayon H
= 5 x 28
= 140
Number of Crayon J
= 3 x 28
= 84
Number of Crayon K
= 7 x 28
= 196
Total revenue
= 140 x 1.50 + 84 x 10 + 196 x 0.30
= 210.00 + 840.00 + 58.80
= $1108.80
Answer(s): $1108.80