Jack and Zane had an equal number of books. Jack donated
18 of her books and Zane donated
13 of his books. Zane donated 35 more books than Jack. How many books did Zane have at first?
| |
Jack |
Zane |
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 Jack and Zane each had at first is the same. Make the number of books that Jack and Zane had at first the same. LCM of 8 and 3 is 24.
Number of books that Zane donated more than Jack
= 8 u - 3 u
= 5 u
5 u = 35
1 u = 35 ÷ 5 = 7
Number of books that Zane had
= 24 u
= 24 x 7
= 168
Answer(s): 168
