Seth, Japheth and Vincent sold some notebooks. Vincent sold 30% of the total number of notebooks sold by Japheth and Seth. Seth sold 25% of the total number of notebooks sold by Japheth and Vincent. Japheth sold 66 more notebooks than Vincent. Find the total number of notebooks sold by all the boys.
| Seth |
Japheth |
Vincent |
Total |
| 10x5 |
3x5 |
13x5 |
| 1x13 |
4x13 |
5x13 |
| 13 u |
37 u |
15 u |
65 u |
30% =
30100 =
310 25% =
25100 =
14 The total number of notebooks is repeated. Make the total number of notebooks the same. LCM of 13 and 5 is 65.
Number of more notebooks that Japheth sold than Vincent
= 37 u - 15 u
= 22 u
22 u = 66
1 u = 66 ÷ 22 = 3
Total number of notebooks sold
= 65 u
= 65 x 3
= 195
Answer(s): 195
