Hazel has some marbles. She has 4 less marbles in Box J than in Box K. After 7 marbles were transferred from Box K to Box J, there were 57 marbles in Box K.
- How many marbles were there in Box K at first?
- How many marbles were there in Box J in the end?
|
Box J |
Box K |
Before |
1 u |
1 u + 4 |
Change |
+ 7 |
- 7 |
After |
1 u + 7 |
57 |
(a)
Number of marbles in Box K at first
= 57 + 7
= 64
(b)
Number of marbles in Box J at first
= 64 - 4
= 60
Number of marbles in Box J in the end
= 60 + 7
= 67
Answer(s): (a) 64; (b) 67