David, Jeremy and Zane sold some files. Zane sold 35% of the total number of files sold by Jeremy and David. David sold 20% of the total number of files sold by Jeremy and Zane. David sold 198 less files than Jeremy. Find the total number of files sold by all the boys.
| David |
Jeremy |
Zane |
Total |
| 20x2 |
7x2 |
27x2 |
| 1x9 |
5x9 |
6x9 |
| 9 u |
31 u |
14 u |
54 u |
35% =
35100 =
720 20% =
20100 =
15 The total number of files is repeated. Make the total number of files the same. LCM of 27 and 6 is 54.
Number of less files that David sold than Jeremy
= 31 u - 9 u
= 22 u
22 u = 198
1 u = 198 ÷ 22 = 9
Total number of files sold
= 54 u
= 54 x 9
= 486
Answer(s): 486
