Jack, Lee and Ken sold some files. Ken sold 40% of the total number of files sold by Lee and Jack. Jack sold 20% of the total number of files sold by Lee and Ken. Lee sold 66 more files than Ken. Find the total number of files sold by all the boys.
| Jack |
Lee |
Ken |
Total |
| 5x6 |
2x6 |
7x6 |
| 1x7 |
5x7 |
6x7 |
| 7 u |
23 u |
12 u |
42 u |
40% =
40100 =
25 20% =
20100 =
15 The total number of files is repeated. Make the total number of files the same. LCM of 7 and 6 is 42.
Number of more files that Lee sold than Ken
= 23 u - 12 u
= 11 u
11 u = 66
1 u = 66 ÷ 11 = 6
Total number of files sold
= 42 u
= 42 x 6
= 252
Answer(s): 252
