Liam and Flynn had an equal number of books. Liam donated
19 of her books and Flynn donated
14 of his books. Flynn donated 15 more books than Liam. How many books did Flynn have at first?
| |
Liam |
Flynn |
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 Liam and Flynn each had at first is the same. Make the number of books that Liam and Flynn had at first the same. LCM of 9 and 4 is 36.
Number of books that Flynn donated more than Liam
= 9 u - 4 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Number of books that Flynn had
= 36 u
= 36 x 3
= 108
Answer(s): 108
