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 : 4.
After Adam gives
37 of his money to Bryan,
Bryan has $50 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 7 = 21 u |
4 x 7 = 28 u |
Before |
7 x 3 = 21 u |
|
Change |
3 x 3 = - 9 u |
+ 9 u |
After |
4 x 3 = 12 u |
37 u |
(a)
Change ratio into units.
The amount that Adam has at first is repeated.
Amount that Adam has at first = 21 u
Amount that Bryan has at first = 28 u
Difference in the amount between Adam and Bryan at first
= 28 u - 21 u
= 7 u
(b)
Amount that Bryan has in the end
= 28 u + 9 u
= 37 u
(c)
Total amount that they have
= 21 u + 28 u
= 49 u
(d)
Difference in the amount that they have in the end
= 37 u - 12 u
= 25 u
25 u = 50
1 u = 50 ÷ 25 = 2
Answer(s): (a) 7; (b) 37; (c) 49; (d) 2