Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Bryan and Adam have some beads.
Adam uses
47 of his beads and
Bryan uses 40 of his beads.
In the end, the number of beads that Adam and Bryan have is in the ratio of 4 : 3.
- Number of beads that Adam has in the end = _____
- Number of beads that Adam has at first = _____
- Number of beads that Bryan has at first = _____
- Total number of beads that they have at first = _____
|
Adam |
Bryan |
Before |
7 x 4 = 28 u |
9 u + 40 |
Change |
- 4 x 4 = - 16 u |
- 40 |
After |
3 x 4 = 12 u |
|
Comparing Adam and Bryan |
4 x 3 = 12 u |
3 x 3 = 9 u |
(a)
The number of beads that Adam has in the end is repeated. Use LCM to make them the same.
The LCM of 3 and 4 = 12
Number of beads that Adam has in the end = 12 u
(b)
Number of beads that Adam has at first = 28 u
(c)
Number of beads that Bryan has at first = 9 u + 40
(d)
Total number of beads that they have at first
= 28 u + 9 u + 40
= 37 u + 40
Answer(s): (a) 12 u; (b) 28 u; (c) 9 u + 40; (d) 37 u + 40