PSLE Cody had 12 more five-dollar notes than ten-dollar notes at first. He exchanged $140 worth of ten-dollar notes for five-dollar notes. How many more five-dollar notes than ten-dollar notes did Cody have after the exchange?
Number |
$5 |
$10 |
Before |
1 u + 12 |
1 u |
Change |
+ 28 |
- 14 |
After |
1 u + 12 + 28 |
1 u - 14 |
Number of ten-dollar notes that Cody exchanged into five-dollar notes
= 140 ÷ 10
= 14
Number of five-dollar notes that Cody received from the exchange
= 140 ÷ 5
= 28
Number of more five-dollar notes than ten-dollar notes
= 12 + 28 + 14
= 54
Answer: 54