Zane and Wesley had an equal number of books. Zane donated
17 of her books and Wesley donated
15 of his books. Wesley donated 12 more books than Zane. How many books did Wesley have at first?
| |
Zane |
Wesley |
Before
|
7x5 =
35 u |
5x7 =
35 u |
Change
|
- 1x5 =
- 5 u |
- 1x7 =
- 7 u |
After
|
6x5 =
30 u |
4x7 =
28 u |
The number of books that Zane and Wesley each had at first is the same. Make the number of books that Zane and Wesley had at first the same. LCM of 7 and 5 is 35.
Number of books that Wesley donated more than Zane
= 7 u - 5 u
= 2 u
2 u = 12
1 u = 12 ÷ 2 = 6
Number of books that Wesley had
= 35 u
= 35 x 6
= 210
Answer(s): 210
