Charlie has 13 notes. There are only five-dollar notes and fifty-dollar notes. The total amount of money is $425. How many fifty-dollar notes does Charlie have?
Number of
fifty-dollar notes |
Value of
fifty-dollar notes |
Number of
five-dollar notes |
Value of
five-dollar notes |
Total
value |
| 13 |
13 x 50 = $650 |
0 |
0 |
$650 |
| 12 |
12 x 50 = $600 |
1 |
1 x 5
= $5 |
$605 |
| 8 |
8 x 50 =
$400 |
5 |
5 x 5 = $25 |
$425 |
Total amount of money if all the notes are fifty-dollar notes
= 13 x 50
= $650
Big difference between the amounts of fifty-dollar notes and five-dollar notes
= 650 - 425
= $225
Small difference between amount in one fifty-dollar note and one five-dollar note
= 50 - 5
= 45
Number of five-dollar notes
= 225 ÷ 45
= 5
Number of fifty-dollar notes
= 13 - 5
= 8
Answer(s): 8
