Lee and Flynn had 52 files together. Lee had 16 more files than Flynn. Both of them sold some of their files. Flynn sold 40% less files than what Lee sold. In the end, Flynn had half as many files left as Lee. How many files had Lee left?
| |
Lee
(1) |
Flynn
(2) |
Make p the same
(2)x2 = (3) |
Comparing Lee
and Flynn at first |
16 more |
|
|
| Before |
34 |
18 |
36 |
| Change |
- 5 u |
- 3 u |
- 6 u |
| After |
2 p |
1 p |
2 p |
Number of files that Flynn had at first
= (52 - 16) ÷ 2
= 36 ÷ 2
= 18
Number of files that Lee had at first
= 18 + 16
= 34
Number of files that Flynn sold in percent
= 100% - 40%
= 60%
60% =
60100 =
35 Make p the same.
(1) = (3)
34 - 5 u = 36 - 6 u
6 u - 5 u = 36 - 34
1 u = 2
1 u = 2 ÷ 1 = 2
Number of files that Lee had left
= 34 - 5 u
= 34 - 5 x 2
= 34 - 10
= 24
Answer(s): 24
