PSLE Neave had 19 more five-dollar notes than fifty-dollar notes at first. He exchanged $400 worth of fifty-dollar notes for five-dollar notes. How many more five-dollar notes than fifty-dollar notes did Neave have after the exchange?
Number |
$5 |
$50 |
Before |
1 u + 19 |
1 u |
Change |
+ 80 |
- 8 |
After |
1 u + 19 + 80 |
1 u - 8 |
Number of fifty-dollar notes that Neave exchanged into five-dollar notes
= 400 ÷ 50
= 8
Number of five-dollar notes that Neave received from the exchange
= 400 ÷ 5
= 80
Number of more five-dollar notes than fifty-dollar notes
= 19 + 80 + 8
= 107
Answer: 107