Fill in the blanks.
Adam has six times as many stickers as Bryan.
Adam gave 39 to Bryan.
In the end, Adam has thrice as many stickers as Bryan.
- Difference in the number of stickers between Adam and Bryan at first = _____ u
- Difference in the number of stickers between Adam and Bryan in the end = _____ u
- Difference in the number of stickers Adam has at first and in the end = _____ u
- Difference in the number of stickers Bryan has at first and in the end = _____ u
|
Adam |
Bryan |
Total |
Before |
6 x 4 = 24 u |
1 x 4 = 4 u |
7 x 4 = 28 u |
Change |
- 39 |
+ 39 |
|
After |
3 x 7 = 21 u |
1 x 7 = 7 u |
4 x 7 = 28 u |
(a)
Change X times into units.
There is an internal transfer of 39 stickers from Adam to Bryan.
The total remains unchanged.
LCM of 7 and 4 is 28.
Number of stickers that Adam gives to Bryan
= 24 u - 21 u
= 3 u
Difference in the number of stickers between Adam and Bryan at first
= 24 u - 4 u
= 20 u
(b)
Difference in the number of stickers between Adam and Bryan in the end
= 21 u - 7 u
= 14 u
(c)
Difference in the number of stickers that Adam has at first and in the end
= 24 u - 21 u
= 3 u
(d)
Difference in the number of stickers that Bryan has at first and in the end
= 7 u - 4 u
= 3 u
Answer(s): (a) 20; (b) 14; (c) 3; (d) 3