Gwen has some coins. She has 12 less coins in Box G than in Box H. After 21 coins were transferred from Box H to Box G, there were 100 coins in Box H.
- How many coins were there in Box H at first?
- How many coins were there in Box G in the end?
|
Box G |
Box H |
Before |
1 u |
1 u + 12 |
Change |
+ 21 |
- 21 |
After |
1 u + 21 |
100 |
(a)
Number of coins in Box H at first
= 100 + 21
= 121
(b)
Number of coins in Box G at first
= 121 - 12
= 109
Number of coins in Box G in the end
= 109 + 21
= 130
Answer(s): (a) 121; (b) 130