During her shopping trip, Xylia bought three different types of pencils, R, S and T in the ratio of 4 : 3 : 7. She decided to sell them at the prices listed as shown.
Pencil R : $2.20
Pencil S : $0.70
Pencil T : $0.40
Given that Xylia bought a total 420 pencils, how much did Xylia collect from the sale of all the pencils?
|
Pencil R |
Pencil S |
Pencil T |
Total |
Ratio of pencil |
4 u |
3 u |
7 u |
14 u |
Value of each pencil |
$2.20 |
$0.70 |
$0.40 |
|
14 u = 420
1 u = 420 ÷ 14 = 30
Number of Pencil R
= 4 x 30
= 120
Number of Pencil S
= 3 x 30
= 90
Number of Pencil T
= 7 x 30
= 210
Total revenue
= 120 x 2.20 + 90 x 0.70 + 210 x 0.40
= 264.00 + 63.00 + 84.00
= $411.00
Answer(s): $411.00