Fill in the blanks.
2 boys, Bryan and Adam, have some stickers.
The ratio of Bryan's to Adam's stickers is 9 : 1.
Bryan gives 424 to Adam.
The ratio of Bryan's to Adam's stickers becomes 1 : 6.
- Number of stickers that Adam has at first = _____ u
- Change in the number of stickers that Adam has = _____ u
- Number of stickers that Bryan has at first = _____ u
- Number of stickers that Bryan has in the end = _____ u
|
Bryan |
Adam |
Total |
Before |
9 x 7 = 63 u |
1 x 7 = 7 u |
10 x 7 = 70 u |
Change |
- 424 |
+ 424 |
|
After |
1 x 10 = 10 u |
6 x 10 = 60 u |
7 x 10 = 70 u |
(a)
Change ratio into units.
There is an internal transfer of 424 stickers from Bryan to Adam.
The total remains unchanged.
LCM of 10 and 7 is 70.
Number of stickers that Bryan gives to Adam
= 63 u - 10 u
= 53 u
Number of stickers that Adam has at first = 7 u
(b)
Number of stickers that Adam has in the end = 60 u
Change in the number of stickers that Adam has
= 60 u - 7 u
= 53 u
(c)
Number of stickers that Bryan has at first = 63 u
(d)
Number of stickers that Bryan has in the end = 10 u
Answer(s): (a) 7; (b) 53; (c) 63; (d) 10