Fill in the blanks.
Bryan has thrice as many stickers as Adam.
Bryan gave 19 to Adam.
In the end, Bryan has twice as many stickers as Adam.
- Difference in the number of stickers between Bryan and Adam at first = _____ u
- Difference in the number of stickers between Bryan and Adam in the end = _____ u
- Difference in the number of stickers Bryan has at first and in the end = _____ u
- Difference in the number of stickers Adam has at first and in the end = _____ u
|
Bryan |
Adam |
Total |
Before |
3 x 3 = 9 u |
1 x 3 = 3 u |
4 x 3 = 12 u |
Change |
- 19 |
+ 19 |
|
After |
2 x 4 = 8 u |
1 x 4 = 4 u |
3 x 4 = 12 u |
(a)
Change X times into units.
There is an internal transfer of 19 stickers from Bryan to Adam.
The total remains unchanged.
LCM of 4 and 3 is 12.
Number of stickers that Bryan gives to Adam
= 9 u - 8 u
= 1 u
Difference in the number of stickers between Bryan and Adam at first
= 9 u - 3 u
= 6 u
(b)
Difference in the number of stickers between Bryan and Adam in the end
= 8 u - 4 u
= 4 u
(c)
Difference in the number of stickers that Bryan has at first and in the end
= 9 u - 8 u
= 1 u
(d)
Difference in the number of stickers that Adam has at first and in the end
= 4 u - 3 u
= 1 u
Answer(s): (a) 6; (b) 4; (c) 1; (d) 1