During her shopping trip, Zara bought three different types of pencils, L, M and N in the ratio of 4 : 2 : 8. She decided to sell them at the prices listed as shown.
Pencil L : $1.70
Pencil M : $10
Pencil N : $0.40
Given that Zara bought a total 546 pencils, how much did Zara collect from the sale of all the pencils?
|
Pencil L |
Pencil M |
Pencil N |
Total |
Ratio of pencil |
4 u |
2 u |
8 u |
14 u |
Value of each pencil |
$1.70 |
$10 |
$0.40 |
|
14 u = 546
1 u = 546 ÷ 14 = 39
Number of Pencil L
= 4 x 39
= 156
Number of Pencil M
= 2 x 39
= 78
Number of Pencil N
= 8 x 39
= 312
Total revenue
= 156 x 1.70 + 78 x 10 + 312 x 0.40
= 265.20 + 780.00 + 124.80
= $1170.00
Answer(s): $1170.00