Penelope and her sister have some coins. Penelope had 80 more coins than her sister. After Penelope gave her sister 23 coins, her sister has 82 coins now.
- How many coins did her sister have at first?
- How many coins does Penelope have now?
|
Penelope |
Her sister |
Before |
1 u + 80 |
1 u |
Change |
- 23 |
+ 23 |
After |
? |
82 |
(a)
Number of coins that her sister had at first
= 82 -23
= 59
(b)
Number of coins that Penelope had at first
= 1 u + 80
= 59 + 80
= 139
Number of coins that Penelope has now
= 139 - 23
= 116
Answer(s): (a) 59; (b) 116