Julian, Luis and Albert sold some pencils. Albert sold 30% of the total number of pencils sold by Luis and Julian. Julian sold 20% of the total number of pencils sold by Luis and Albert. Julian sold 68 less pencils than Luis. Find the total number of pencils sold by all the boys.
| Julian |
Luis |
Albert |
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 pencils is repeated. Make the total number of pencils the same. LCM of 13 and 6 is 78.
Number of less pencils that Julian sold than Luis
= 47 u - 13 u
= 34 u
34 u = 68
1 u = 68 ÷ 34 = 2
Total number of pencils sold
= 78 u
= 78 x 2
= 156
Answer(s): 156
