Sean and Vaidev had an equal number of books. Sean donated
19 of her books and Vaidev donated
14 of his books. Vaidev donated 40 more books than Sean. How many books did Vaidev have at first?
| |
Sean |
Vaidev |
Before
|
9x4 =
36 u |
4x9 =
36 u |
Change
|
- 1x4 =
- 4 u |
- 1x9 =
- 9 u |
After
|
8x4 =
32 u |
3x9 =
27 u |
The number of books that Sean and Vaidev each had at first is the same. Make the number of books that Sean and Vaidev had at first the same. LCM of 9 and 4 is 36.
Number of books that Vaidev donated more than Sean
= 9 u - 4 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
Number of books that Vaidev had
= 36 u
= 36 x 8
= 288
Answer(s): 288
