Albert had 5 times as many books as Charlie. After Albert and Charlie donated 120 books and 8 books away respectively, they were left with an equal number of books. How many books did Albert have at first?
| |
Albert |
Charlie |
| Before |
5 u |
1 u |
| Change |
- 120 |
- 8 |
| After |
5 u - 120 |
1 u - 8 |
Albert and Charlie had the same number of books left.
5 u - 120 = 1 u - 8
5 u - 1 u = 120 - 8
4 u = 112
1 u = 112 ÷ 4 = 28
Number of books that Albert had at first
= 5 u
= 5 x 28
= 140
Answer(s): 140
