During her shopping trip, Olivia bought three different types of crayons, N, P and Q in the ratio of 5 : 3 : 9. She decided to sell them at the prices listed as shown.
Crayon N : $2.70
Crayon P : $0.90
Crayon Q : $0.50
Given that Olivia bought a total 425 crayons, how much did Olivia collect from the sale of all the crayons?
|
Crayon N |
Crayon P |
Crayon Q |
Total |
Ratio of crayon |
5 u |
3 u |
9 u |
17 u |
Value of each crayon |
$2.70 |
$0.90 |
$0.50 |
|
17 u = 425
1 u = 425 ÷ 17 = 25
Number of Crayon N
= 5 x 25
= 125
Number of Crayon P
= 3 x 25
= 75
Number of Crayon Q
= 9 x 25
= 225
Total revenue
= 125 x 2.70 + 75 x 0.90 + 225 x 0.50
= 337.50 + 67.50 + 112.50
= $517.50
Answer(s): $517.50