Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have some stickers.
Bryan uses
38 of his stickers and
Adam uses 41 of his stickers.
In the end, the number of stickers that Bryan and Adam have is in the ratio of 4 : 1.
- Number of stickers that Bryan has in the end = _____
- Number of stickers that Bryan has at first = _____
- Number of stickers that Adam has at first = _____
- Total number of stickers that they have at first = _____
|
Bryan |
Adam |
Before |
8 x 4 = 32 u |
5 u + 41 |
Change |
- 3 x 4 = - 12 u |
- 41 |
After |
5 x 4 = 20 u |
|
Comparing Bryan and Adam |
4 x 5 = 20 u |
1 x 5 = 5 u |
(a)
The number of stickers that Bryan has in the end is repeated. Use LCM to make them the same.
The LCM of 5 and 4 = 20
Number of stickers that Bryan has in the end = 20 u
(b)
Number of stickers that Bryan has at first = 32 u
(c)
Number of stickers that Adam has at first = 5 u + 41
(d)
Total number of stickers that they have at first
= 32 u + 5 u + 41
= 37 u + 41
Answer(s): (a) 20 u; (b) 32 u; (c) 5 u + 41; (d) 37 u + 41