Nick and Asher had an equal number of books. Nick donated
17 of her books and Asher donated
13 of his books. Asher donated 20 more books than Nick. How many books did Asher have at first?
| |
Nick |
Asher |
Before
|
7x3 =
21 u |
3x7 =
21 u |
Change
|
- 1x3 =
- 3 u |
- 1x7 =
- 7 u |
After
|
6x3 =
18 u |
2x7 =
14 u |
The number of books that Nick and Asher each had at first is the same. Make the number of books that Nick and Asher had at first the same. LCM of 7 and 3 is 21.
Number of books that Asher donated more than Nick
= 7 u - 3 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Number of books that Asher had
= 21 u
= 21 x 5
= 105
Answer(s): 105
