Change ratio into units.
Fill in the blanks in numbers, units or unit equations.
Adam and Bryan share a sum of money in the ratio 3 : 7.
After Adam gives
25 of his money to Bryan,
Bryan has $32 more than Adam.
- Difference in the amount between Adam and Bryan at first = _____ u
- Amount that Bryan has in the end = _____ u
- Total amount that they have = _____ u
- 1 u = $_____
|
Adam |
Bryan |
Comparing between Adam and Bryan at first |
3 x 5 = 15 u |
7 x 5 = 35 u |
Before |
5 x 3 = 15 u |
|
Change |
2 x 3 = - 6 u |
+ 6 u |
After |
3 x 3 = 9 u |
41 u |
(a)
Change ratio into units.
The amount that Adam has at first is repeated.
Amount that Adam has at first = 15 u
Amount that Bryan has at first = 35 u
Difference in the amount between Adam and Bryan at first
= 35 u - 15 u
= 20 u
(b)
Amount that Bryan has in the end
= 35 u + 6 u
= 41 u
(c)
Total amount that they have
= 15 u + 35 u
= 50 u
(d)
Difference in the amount that they have in the end
= 41 u - 9 u
= 32 u
32 u = 32
1 u = 32 ÷ 32 = 1
Answer(s): (a) 20; (b) 41; (c) 50; (d) 1