During her shopping trip, Ivory bought three different types of pencils, K, L and M in the ratio of 5 : 2 : 9. She decided to sell them at the prices listed as shown.
Pencil K : $1.70
Pencil L : $0.75
Pencil M : $0.40
Given that Ivory bought a total 416 pencils, how much did Ivory collect from the sale of all the pencils?
|
Pencil K |
Pencil L |
Pencil M |
Total |
Ratio of pencil |
5 u |
2 u |
9 u |
16 u |
Value of each pencil |
$1.70 |
$0.75 |
$0.40 |
|
16 u = 416
1 u = 416 ÷ 16 = 26
Number of Pencil K
= 5 x 26
= 130
Number of Pencil L
= 2 x 26
= 52
Number of Pencil M
= 9 x 26
= 234
Total revenue
= 130 x 1.70 + 52 x 0.75 + 234 x 0.40
= 221.00 + 39.00 + 93.60
= $353.60
Answer(s): $353.60