Valen, Oscar and Bryan sold some notebooks. Bryan sold 30% of the total number of notebooks sold by Oscar and Valen. Valen sold 20% of the total number of notebooks sold by Oscar and Bryan. Valen sold 68 less notebooks than Oscar. Find the total number of notebooks sold by all the boys.
| Valen |
Oscar |
Bryan |
Total |
| 10x6 |
3x6 |
13x6 |
| 1x13 |
5x13 |
6x13 |
| 13 u |
47 u |
18 u |
78 u |
30% =
30100 =
310 20% =
20100 =
15 The total number of notebooks is repeated. Make the total number of notebooks the same. LCM of 13 and 6 is 78.
Number of less notebooks that Valen sold than Oscar
= 47 u - 13 u
= 34 u
34 u = 68
1 u = 68 ÷ 34 = 2
Total number of notebooks sold
= 78 u
= 78 x 2
= 156
Answer(s): 156
