Xuan and her brother have some marbles. Xuan had 54 more marbles than her brother. After Xuan gave her brother 23 marbles, her brother has 86 marbles now.
- How many marbles did her brother have at first?
- How many marbles does Xuan have now?
|
Xuan |
Her brother |
Before |
1 u + 54 |
1 u |
Change |
- 23 |
+ 23 |
After |
? |
86 |
(a)
Number of marbles that her brother had at first
= 86 -23
= 63
(b)
Number of marbles that Xuan had at first
= 1 u + 54
= 63 + 54
= 117
Number of marbles that Xuan has now
= 117 - 23
= 94
Answer(s): (a) 63; (b) 94