Fill in the blanks in units (Eg 1 u) or unit equations (Eg 1 u + 2).
Bryan and Adam have some beads.
Adam uses
13 of his beads and
Bryan buys 26 more beads.
In the end, the number of beads that Bryan and Adam have is in the ratio of 4 : 9.
- 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 = _____
|
Bryan |
Adam |
Before |
8 u - 26 |
3 x 9 = 27 u |
Change |
+ 26 |
- 1 x 9 = - 9 u |
After |
8 u |
2 x 9 = 18 u |
Comparing Bryan and Adam in the end |
4 x 2 = 8 u |
9 x 2 = 18 u |
(a)
The number of beads that Adam has in the end is repeated. Use LCM to make them the same.
LCM of 2 and 9 = 18
Number of beads that Adam has in the end = 18 u
(b)
Number of beads that Adam has at first = 27 u
(c)
Number of beads that Bryan has at first
= 8 u - 26
(d)
Total number of beads that they have at first
= 8 u - 26 + 27 u
= 8 u + 27 u - 26
= 35 u - 26
Answer(s): (a) 18 u; (b) 27 u; (c) 8 u - 26; (d) 35 u - 26