Fill in the blanks.
Adam has thrice as many stickers as Bryan.
Both give away 21 stickers each.
In the end, Adam has six times as many stickers as Bryan.
- Difference in the number of stickers between Adam and Bryan = _____ u
- Number of stickers that Adam and Bryan have in the end = _____ u
- Number of stickers that Adam gives away = _____ u
- 1 u = _____
|
Adam |
Bryan |
Difference |
Before |
3 x 5 = 15 u |
1 x 5 = 5 u |
2 x 5 = 10 u |
Change |
- 21 |
- 21 |
|
After |
6 x 2 = 12 u |
1 x 2 = 2 u |
5 x 2 = 10 u |
(a)
Change X times into units.
The difference in the number of stickers that Adam and Bryan have at first and in the end is the same.
LCM of 2 and 5 is 10.
Difference in the number of stickers between Adam and Bryan
= 15 u - 5 u
= 10 u
(b)
Number of stickers that Adam and Bryan had in the end
= 12 u + 2 u
= 14 u
(c)
Number of stickers that Adam gives away
= 15 u - 12 u
= 3 u
(d)
3 u = 21
1 u = 21 ÷ 3 = 7
Answer(s): (a) 10 ; (b) 14; (c) 3 ; (d) 7