If Adam gives 19 stickers to Bryan, both will have the same number of stickers.
If Bryan gives 5 stickers to Adam, Adam has 5 times as many as Bryan.
- How many stickers does Adam have?
- How many stickers does Bryan have?
- How many stickers do Adam and Bryan have altogether?
- How many stickers does Adam have more than Bryan?
|
Case 1 |
Case 2 |
|
Adam |
Bryan |
Adam |
Bryan |
Before |
3 u + 19 |
3 u - 19 |
5 u - 5 |
1 u + 5 |
Change |
- 19 |
+ 19 |
+ 5 |
- 5 |
After |
3 u |
3 u |
5 u |
1 u |
(a)
Total number of stickers in the end
= 5 u + 1 u
= 6 u
For scenario 1, Adam and Bryan have same number of stickers in the end.
Number of stickers that each boy has in the end
= 6 u ÷ 2
= 3 u
Number of stickers that Bryan has at first in both scenarios is the same.
3 u - 19 = 1 u + 5
3 u - 1 u = 5 + 19
2 u = 24
1 u = 24 ÷ 2 = 12
Number of stickers that Adam has
= 3 u + 19
= 3 x 12 + 19
= 36 + 19
= 55
(b)
Number of stickers that Bryan has
= 1 u + 5
= 12 + 5
= 17
(c)
Total number of stickers
= 55 + 17
= 72
(d)
Number of stickers that Adam has more than Bryan
= 55 - 17
= 38
Answer(s): (a) 55; (b) 17; (c) 72; (d) 38