PSLE Tom had 14 more five-dollar notes than ten-dollar notes at first. He exchanged $190 worth of ten-dollar notes for five-dollar notes. How many more five-dollar notes than ten-dollar notes did Tom have after the exchange?
Number |
$5 |
$10 |
Before |
1 u + 14 |
1 u |
Change |
+ 38 |
- 19 |
After |
1 u + 14 + 38 |
1 u - 19 |
Number of ten-dollar notes that Tom exchanged into five-dollar notes
= 190 ÷ 10
= 19
Number of five-dollar notes that Tom received from the exchange
= 190 ÷ 5
= 38
Number of more five-dollar notes than ten-dollar notes
= 14 + 38 + 19
= 71
Answer: 71