Fill in the blanks.
Adam has nine times as many stickers as Bryan.
Adam gave 140 to Bryan.
In the end, Adam has twice 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 |
9 x 3 = 27 u |
1 x 3 = 3 u |
10 x 3 = 30 u |
Change |
- 140 |
+ 140 |
|
After |
2 x 10 = 20 u |
1 x 10 = 10 u |
3 x 10 = 30 u |
(a)
Change X times into units.
There is an internal transfer of 140 stickers from Adam to Bryan.
The total remains unchanged.
LCM of 10 and 3 is 30.
Number of stickers that Adam gives to Bryan
= 27 u - 20 u
= 7 u
Difference in the number of stickers between Adam and Bryan at first
= 27 u - 3 u
= 24 u
(b)
Difference in the number of stickers between Adam and Bryan in the end
= 20 u - 10 u
= 10 u
(c)
Difference in the number of stickers that Adam has at first and in the end
= 27 u - 20 u
= 7 u
(d)
Difference in the number of stickers that Bryan has at first and in the end
= 10 u - 3 u
= 7 u
Answer(s): (a) 24; (b) 10; (c) 7; (d) 7