During her shopping trip, Shiyun bought three different types of pencils, S, T and U in the ratio of 5 : 2 : 8. She decided to sell them at the prices listed as shown.
Pencil S : $1.25
Pencil T : $0.90
Pencil U : $0.40
Given that Shiyun bought a total 540 pencils, how much did Shiyun collect from the sale of all the pencils?
|
Pencil S |
Pencil T |
Pencil U |
Total |
Ratio of pencil |
5 u |
2 u |
8 u |
15 u |
Value of each pencil |
$1.25 |
$0.90 |
$0.40 |
|
15 u = 540
1 u = 540 ÷ 15 = 36
Number of Pencil S
= 5 x 36
= 180
Number of Pencil T
= 2 x 36
= 72
Number of Pencil U
= 8 x 36
= 288
Total revenue
= 180 x 1.25 + 72 x 0.90 + 288 x 0.40
= 225.00 + 64.80 + 115.20
= $405.00
Answer(s): $405.00