During her shopping trip, Cathy bought three different types of pencils, F, G and H in the ratio of 5 : 2 : 9. She decided to sell them at the prices listed as shown.
Pencil F : $1.50
Pencil G : $0.90
Pencil H : $0.50
Given that Cathy bought a total 544 pencils, how much did Cathy collect from the sale of all the pencils?
|
Pencil F |
Pencil G |
Pencil H |
Total |
Ratio of pencil |
5 u |
2 u |
9 u |
16 u |
Value of each pencil |
$1.50 |
$0.90 |
$0.50 |
|
16 u = 544
1 u = 544 ÷ 16 = 34
Number of Pencil F
= 5 x 34
= 170
Number of Pencil G
= 2 x 34
= 68
Number of Pencil H
= 9 x 34
= 306
Total revenue
= 170 x 1.50 + 68 x 0.90 + 306 x 0.50
= 255.00 + 61.20 + 153.00
= $469.20
Answer(s): $469.20