During her shopping trip, Olivia bought three different types of pencils, K, L and M in the ratio of 6 : 2 : 9. She decided to sell them at the prices listed as shown.
Pencil K : $2.10
Pencil L : $0.80
Pencil M : $0.40
Given that Olivia bought a total 425 pencils, how much did Olivia collect from the sale of all the pencils?
|
Pencil K |
Pencil L |
Pencil M |
Total |
Ratio of pencil |
6 u |
2 u |
9 u |
17 u |
Value of each pencil |
$2.10 |
$0.80 |
$0.40 |
|
17 u = 425
1 u = 425 ÷ 17 = 25
Number of Pencil K
= 6 x 25
= 150
Number of Pencil L
= 2 x 25
= 50
Number of Pencil M
= 9 x 25
= 225
Total revenue
= 150 x 2.10 + 50 x 0.80 + 225 x 0.40
= 315.00 + 40.00 + 90.00
= $445.00
Answer(s): $445.00