Carl and Daniel had an equal number of books. Carl donated
18 of her books and Daniel donated
13 of his books. Daniel donated 40 more books than Carl. How many books did Daniel have at first?
| |
Carl |
Daniel |
Before
|
8x3 =
24 u |
3x8 =
24 u |
Change
|
- 1x3 =
- 3 u |
- 1x8 =
- 8 u |
After
|
7x3 =
21 u |
2x8 =
16 u |
The number of books that Carl and Daniel each had at first is the same. Make the number of books that Carl and Daniel had at first the same. LCM of 8 and 3 is 24.
Number of books that Daniel donated more than Carl
= 8 u - 3 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
Number of books that Daniel had
= 24 u
= 24 x 8
= 192
Answer(s): 192
