During her shopping trip, Eva bought three different types of pencils, Q, R and S in the ratio of 4 : 2 : 8. She decided to sell them at the prices listed as shown.
Pencil Q : $1.45
Pencil R : $0.80
Pencil S : $0.40
Given that Eva bought a total 406 pencils, how much did Eva collect from the sale of all the pencils?
|
Pencil Q |
Pencil R |
Pencil S |
Total |
Ratio of pencil |
4 u |
2 u |
8 u |
14 u |
Value of each pencil |
$1.45 |
$0.80 |
$0.40 |
|
14 u = 406
1 u = 406 ÷ 14 = 29
Number of Pencil Q
= 4 x 29
= 116
Number of Pencil R
= 2 x 29
= 58
Number of Pencil S
= 8 x 29
= 232
Total revenue
= 116 x 1.45 + 58 x 0.80 + 232 x 0.40
= 168.20 + 46.40 + 92.80
= $307.40
Answer(s): $307.40