Oliver and Brandon had an equal number of books. Oliver donated
17 of her books and Brandon donated
14 of his books. Brandon donated 24 more books than Oliver. How many books did Brandon have at first?
| |
Oliver |
Brandon |
Before
|
7x4 =
28 u |
4x7 =
28 u |
Change
|
- 1x4 =
- 4 u |
- 1x7 =
- 7 u |
After
|
6x4 =
24 u |
3x7 =
21 u |
The number of books that Oliver and Brandon each had at first is the same. Make the number of books that Oliver and Brandon had at first the same. LCM of 7 and 4 is 28.
Number of books that Brandon donated more than Oliver
= 7 u - 4 u
= 3 u
3 u = 24
1 u = 24 ÷ 3 = 8
Number of books that Brandon had
= 28 u
= 28 x 8
= 224
Answer(s): 224
