Ahmad had 3 times as many books as Vaidev. After Ahmad and Vaidev donated 68 books and 2 books away respectively, they were left with an equal number of books. How many books did Ahmad have at first?
| |
Ahmad |
Vaidev |
| Before |
3 u |
1 u |
| Change |
- 68 |
- 2 |
| After |
3 u - 68 |
1 u - 2 |
Ahmad and Vaidev had the same number of books left.
3 u - 68 = 1 u - 2
3 u - 1 u = 68 - 2
2 u = 66
1 u = 66 ÷ 2 = 33
Number of books that Ahmad had at first
= 3 u
= 3 x 33
= 99
Answer(s): 99
