PSLE Rael had 12 more five-dollar notes than ten-dollar notes at first. He exchanged $130 worth of ten-dollar notes for five-dollar notes. How many more five-dollar notes than ten-dollar notes did Rael have after the exchange?
Number |
$5 |
$10 |
Before |
1 u + 12 |
1 u |
Change |
+ 26 |
- 13 |
After |
1 u + 12 + 26 |
1 u - 13 |
Number of ten-dollar notes that Rael exchanged into five-dollar notes
= 130 ÷ 10
= 13
Number of five-dollar notes that Rael received from the exchange
= 130 ÷ 5
= 26
Number of more five-dollar notes than ten-dollar notes
= 12 + 26 + 13
= 51
Answer: 51