During her shopping trip, Jean bought three different types of pens, J, K and L in the ratio of 4 : 3 : 9. She decided to sell them at the prices listed as shown.
Pen J : $2.10
Pen K : $0.75
Pen L : $0.40
Given that Jean bought a total 496 pens, how much did Jean collect from the sale of all the pens?
|
Pen J |
Pen K |
Pen L |
Total |
Ratio of pen |
4 u |
3 u |
9 u |
16 u |
Value of each pen |
$2.10 |
$0.75 |
$0.40 |
|
16 u = 496
1 u = 496 ÷ 16 = 31
Number of Pen J
= 4 x 31
= 124
Number of Pen K
= 3 x 31
= 93
Number of Pen L
= 9 x 31
= 279
Total revenue
= 124 x 2.10 + 93 x 0.75 + 279 x 0.40
= 260.40 + 69.75 + 111.60
= $441.75
Answer(s): $441.75