PSLE Cole had 17 more one-dollar notes than five-dollar notes at first. He exchanged $55 worth of five-dollar notes for one-dollar notes. How many less five-dollar notes than one-dollar notes did Cole have after the exchange?
Number |
$1 |
$5 |
Before |
1 u + 17 |
1 u |
Change |
+ 55 |
- 11 |
After |
1 u + 17 + 55 |
1 u - 11 |
Number of five-dollar notes that Cole exchanged into one-dollar notes
= 55 ÷ 5
= 11
Number of one-dollar notes that Cole received from the exchange
= 55 ÷ 1
= 55
Number of less five-dollar notes than one-dollar notes
= 17 + 55 + 11
= 83
Answer: 83