PSLE Jeremy had 13 more five-dollar notes than ten-dollar notes at first. He exchanged $150 worth of ten-dollar notes for five-dollar notes. How many more five-dollar notes than ten-dollar notes did Jeremy have after the exchange?
Number |
$5 |
$10 |
Before |
1 u + 13 |
1 u |
Change |
+ 30 |
- 15 |
After |
1 u + 13 + 30 |
1 u - 15 |
Number of ten-dollar notes that Jeremy exchanged into five-dollar notes
= 150 ÷ 10
= 15
Number of five-dollar notes that Jeremy received from the exchange
= 150 ÷ 5
= 30
Number of more five-dollar notes than ten-dollar notes
= 13 + 30 + 15
= 58
Answer: 58