Perry and Owen had an equal number of books. Perry donated
19 of her books and Owen donated
14 of his books. Owen donated 15 more books than Perry. How many books did Owen have at first?
| |
Perry |
Owen |
Before
|
9x4 =
36 u |
4x9 =
36 u |
Change
|
- 1x4 =
- 4 u |
- 1x9 =
- 9 u |
After
|
8x4 =
32 u |
3x9 =
27 u |
The number of books that Perry and Owen each had at first is the same. Make the number of books that Perry and Owen had at first the same. LCM of 9 and 4 is 36.
Number of books that Owen donated more than Perry
= 9 u - 4 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Number of books that Owen had
= 36 u
= 36 x 3
= 108
Answer(s): 108
