During her shopping trip, Sarah bought three different types of pens, V, W and X in the ratio of 4 : 3 : 9. She decided to sell them at the prices listed as shown.
Pen V : $1.40
Pen W : $0.80
Pen X : $0.40
Given that Sarah bought a total 464 pens, how much did Sarah collect from the sale of all the pens?
|
Pen V |
Pen W |
Pen X |
Total |
Ratio of pen |
4 u |
3 u |
9 u |
16 u |
Value of each pen |
$1.40 |
$0.80 |
$0.40 |
|
16 u = 464
1 u = 464 ÷ 16 = 29
Number of Pen V
= 4 x 29
= 116
Number of Pen W
= 3 x 29
= 87
Number of Pen X
= 9 x 29
= 261
Total revenue
= 116 x 1.40 + 87 x 0.80 + 261 x 0.40
= 162.40 + 69.60 + 104.40
= $336.40
Answer(s): $336.40