During her shopping trip, Lynn bought three different types of pens, S, T and U in the ratio of 4 : 3 : 9. She decided to sell them at the prices listed as shown.
Pen S : $2.60
Pen T : $10
Pen U : $0.50
Given that Lynn bought a total 400 pens, how much did Lynn collect from the sale of all the pens?
|
Pen S |
Pen T |
Pen U |
Total |
Ratio of pen |
4 u |
3 u |
9 u |
16 u |
Value of each pen |
$2.60 |
$10 |
$0.50 |
|
16 u = 400
1 u = 400 ÷ 16 = 25
Number of Pen S
= 4 x 25
= 100
Number of Pen T
= 3 x 25
= 75
Number of Pen U
= 9 x 25
= 225
Total revenue
= 100 x 2.60 + 75 x 10 + 225 x 0.50
= 260.00 + 750.00 + 112.50
= $1122.50
Answer(s): $1122.50