Barbara has some coins. She has 3 less coins in Bag P than in Bag Q. After 12 coins were transferred from Bag Q to Bag P, there were 100 coins in Bag Q.
- How many coins were there in Bag Q at first?
- How many coins were there in Bag P in the end?
|
Bag P |
Bag Q |
Before |
1 u |
1 u + 3 |
Change |
+ 12 |
- 12 |
After |
1 u + 12 |
100 |
(a)
Number of coins in Bag Q at first
= 100 + 12
= 112
(b)
Number of coins in Bag P at first
= 112 - 3
= 109
Number of coins in Bag P in the end
= 109 + 12
= 121
Answer(s): (a) 112; (b) 121