Albert and Luis share a bunch of oranges in the ratio 7 : 5. If Albert gives Luis 21 oranges from his share, they will have the same number of oranges. How many oranges does Albert have at first?
|
Albert |
Luis |
Before |
7 u |
5 u |
Change |
- 21 |
+ 21 |
After |
7 u - 21 |
5 u + 21 |
If Albert gives Luis 21 oranges from his share, they will have the same number of oranges.
7 u - 21 = 5 u + 21
7 u - 5 u = 21 + 21
2 u = 42
1 u = 42 ÷ 2 = 21
Number of oranges that Albert has
= 7 u
= 7 x 21
= 147
Answer(s): 147