Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have some beads.
Bryan uses
14 of his beads and
Adam uses 33 of his beads.
In the end, the number of beads that Bryan and Adam have is in the ratio of 5 : 4.
- Number of beads that Bryan has in the end = _____
- Number of beads that Bryan has at first = _____
- Number of beads that Adam has at first = _____
- Total number of beads that they have at first = _____
|
Bryan |
Adam |
Before |
4 x 5 = 20 u |
12 u + 33 |
Change |
- 1 x 5 = - 5 u |
- 33 |
After |
3 x 5 = 15 u |
|
Comparing Bryan and Adam |
5 x 3 = 15 u |
4 x 3 = 12 u |
(a)
The number of beads that Bryan has in the end is repeated. Use LCM to make them the same.
The LCM of 3 and 5 = 15
Number of beads that Bryan has in the end = 15 u
(b)
Number of beads that Bryan has at first = 20 u
(c)
Number of beads that Adam has at first = 12 u + 33
(d)
Total number of beads that they have at first
= 20 u + 12 u + 33
= 32 u + 33
Answer(s): (a) 15 u; (b) 20 u; (c) 12 u + 33; (d) 32 u + 33