PSLE Ken had 11 more one-dollar notes than fifty-dollar notes at first. He exchanged $650 worth of fifty-dollar notes for one-dollar notes. How many more one-dollar notes than fifty-dollar notes did Ken have after the exchange?
Number |
$1 |
$50 |
Before |
1 u + 11 |
1 u |
Change |
+ 650 |
- 13 |
After |
1 u + 11 + 650 |
1 u - 13 |
Number of fifty-dollar notes that Ken exchanged into one-dollar notes
= 650 ÷ 50
= 13
Number of one-dollar notes that Ken received from the exchange
= 650 ÷ 1
= 650
Number of more one-dollar notes than fifty-dollar notes
= 11 + 650 + 13
= 674
Answer: 674