Michael and Zane had an equal number of books. Michael donated
19 of her books and Zane donated
15 of his books. Zane donated 32 more books than Michael. How many books did Zane have at first?
| |
Michael |
Zane |
Before
|
9x5 =
45 u |
5x9 =
45 u |
Change
|
- 1x5 =
- 5 u |
- 1x9 =
- 9 u |
After
|
8x5 =
40 u |
4x9 =
36 u |
The number of books that Michael and Zane each had at first is the same. Make the number of books that Michael and Zane had at first the same. LCM of 9 and 5 is 45.
Number of books that Zane donated more than Michael
= 9 u - 5 u
= 4 u
4 u = 32
1 u = 32 ÷ 4 = 8
Number of books that Zane had
= 45 u
= 45 x 8
= 360
Answer(s): 360
