Wesley had 5 times as many books as Valen. After Wesley and Valen donated 87 books and 7 books away respectively, they were left with an equal number of books. How many books did Wesley have at first?
| |
Wesley |
Valen |
| Before |
5 u |
1 u |
| Change |
- 87 |
- 7 |
| After |
5 u - 87 |
1 u - 7 |
Wesley and Valen had the same number of books left.
5 u - 87 = 1 u - 7
5 u - 1 u = 87 - 7
4 u = 80
1 u = 80 ÷ 4 = 20
Number of books that Wesley had at first
= 5 u
= 5 x 20
= 100
Answer(s): 100
