PSLE Luis had 17 more one-dollar notes than five-dollar notes at first. He exchanged $35 worth of five-dollar notes for one-dollar notes. How many more one-dollar notes than five-dollar notes did Luis have after the exchange?
Number |
$1 |
$5 |
Before |
1 u + 17 |
1 u |
Change |
+ 35 |
- 7 |
After |
1 u + 17 + 35 |
1 u - 7 |
Number of five-dollar notes that Luis exchanged into one-dollar notes
= 35 ÷ 5
= 7
Number of one-dollar notes that Luis received from the exchange
= 35 ÷ 1
= 35
Number of more one-dollar notes than five-dollar notes
= 17 + 35 + 7
= 59
Answer: 59