PSLE Tim had 14 more two-dollar notes than five-dollar notes at first. He exchanged $70 worth of five-dollar notes for two-dollar notes. How many less five-dollar notes than two-dollar notes did Tim have after the exchange?
Number |
$2 |
$5 |
Before |
1 u + 14 |
1 u |
Change |
+ 35 |
- 14 |
After |
1 u + 14 + 35 |
1 u - 14 |
Number of five-dollar notes that Tim exchanged into two-dollar notes
= 70 ÷ 5
= 14
Number of two-dollar notes that Tim received from the exchange
= 70 ÷ 2
= 35
Number of less five-dollar notes than two-dollar notes
= 14 + 35 + 14
= 63
Answer: 63