Fill in the blanks.
Bryan has six times as many stickers as Adam.
Bryan gave 40 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 |
6 x 3 = 18 u |
1 x 3 = 3 u |
7 x 3 = 21 u |
Change |
- 40 |
+ 40 |
|
After |
2 x 7 = 14 u |
1 x 7 = 7 u |
3 x 7 = 21 u |
(a)
Change X times into units.
There is an internal transfer of 40 stickers from Bryan to Adam.
The total remains unchanged.
LCM of 7 and 3 is 21.
Number of stickers that Bryan gives to Adam
= 18 u - 14 u
= 4 u
Difference in the number of stickers between Bryan and Adam at first
= 18 u - 3 u
= 15 u
(b)
Difference in the number of stickers between Bryan and Adam in the end
= 14 u - 7 u
= 7 u
(c)
Difference in the number of stickers that Bryan has at first and in the end
= 18 u - 14 u
= 4 u
(d)
Difference in the number of stickers that Adam has at first and in the end
= 7 u - 3 u
= 4 u
Answer(s): (a) 15; (b) 7; (c) 4; (d) 4