During her shopping trip, Lucy bought three different types of pencils, B, C and D in the ratio of 4 : 2 : 8. She decided to sell them at the prices listed as shown.
Pencil B : $1.70
Pencil C : $0.90
Pencil D : $0.40
Given that Lucy bought a total 434 pencils, how much did Lucy collect from the sale of all the pencils?
|
Pencil B |
Pencil C |
Pencil D |
Total |
Ratio of pencil |
4 u |
2 u |
8 u |
14 u |
Value of each pencil |
$1.70 |
$0.90 |
$0.40 |
|
14 u = 434
1 u = 434 ÷ 14 = 31
Number of Pencil B
= 4 x 31
= 124
Number of Pencil C
= 2 x 31
= 62
Number of Pencil D
= 8 x 31
= 248
Total revenue
= 124 x 1.70 + 62 x 0.90 + 248 x 0.40
= 210.80 + 55.80 + 99.20
= $365.80
Answer(s): $365.80