Ryan, Jack and Ivan sold some notebooks. Ivan sold 40% of the total number of notebooks sold by Jack and Ryan. Ryan sold 30% of the total number of notebooks sold by Jack and Ivan. Jack sold 180 more notebooks than Ivan. Find the total number of notebooks sold by all the boys.
| Ryan |
Jack |
Ivan |
Total |
| 5x13 |
2x13 |
7x13 |
| 3x7 |
10x7 |
13x7 |
| 21 u |
44 u |
26 u |
91 u |
40% =
40100 =
25 30% =
30100 =
310 The total number of notebooks is repeated. Make the total number of notebooks the same. LCM of 7 and 13 is 91.
Number of more notebooks that Jack sold than Ivan
= 44 u - 26 u
= 18 u
18 u = 180
1 u = 180 ÷ 18 = 10
Total number of notebooks sold
= 91 u
= 91 x 10
= 910
Answer(s): 910
