Zeph, Paul and David sold some notebooks. David sold 40% of the total number of notebooks sold by Paul and Zeph. Zeph sold 20% of the total number of notebooks sold by Paul and David. Paul sold 44 more notebooks than David. Find the total number of notebooks sold by all the boys.
| Zeph |
Paul |
David |
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 notebooks is repeated. Make the total number of notebooks the same. LCM of 7 and 6 is 42.
Number of more notebooks that Paul sold than David
= 23 u - 12 u
= 11 u
11 u = 44
1 u = 44 ÷ 11 = 4
Total number of notebooks sold
= 42 u
= 42 x 4
= 168
Answer(s): 168
