Jenson and Ethan had an equal number of books. Jenson donated
18 of her books and Ethan donated
13 of his books. Ethan donated 10 more books than Jenson. How many books did Ethan have at first?
| |
Jenson |
Ethan |
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 Jenson and Ethan each had at first is the same. Make the number of books that Jenson and Ethan had at first the same. LCM of 8 and 3 is 24.
Number of books that Ethan donated more than Jenson
= 8 u - 3 u
= 5 u
5 u = 10
1 u = 10 ÷ 5 = 2
Number of books that Ethan had
= 24 u
= 24 x 2
= 48
Answer(s): 48
