Perry and Wesley had an equal number of books. Perry donated
17 of her books and Wesley donated
14 of his books. Wesley donated 30 more books than Perry. How many books did Wesley have at first?
| |
Perry |
Wesley |
Before
|
7x4 =
28 u |
4x7 =
28 u |
Change
|
- 1x4 =
- 4 u |
- 1x7 =
- 7 u |
After
|
6x4 =
24 u |
3x7 =
21 u |
The number of books that Perry and Wesley each had at first is the same. Make the number of books that Perry and Wesley had at first the same. LCM of 7 and 4 is 28.
Number of books that Wesley donated more than Perry
= 7 u - 4 u
= 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Number of books that Wesley had
= 28 u
= 28 x 10
= 280
Answer(s): 280
