Ken, Jack and Albert sold some pencils. Albert sold 20% of the total number of pencils sold by Jack and Ken. Ken sold 25% of the total number of pencils sold by Jack and Albert. Ken sold 91 less pencils than Jack. Find the total number of pencils sold by all the boys.
| Ken |
Jack |
Albert |
Total |
| 5x5 |
1x5 |
6x5 |
| 1x6 |
4x6 |
5x6 |
| 6 u |
19 u |
5 u |
30 u |
20% =
20100 =
15 25% =
25100 =
14 The total number of pencils is repeated. Make the total number of pencils the same. LCM of 6 and 5 is 30.
Number of less pencils that Ken sold than Jack
= 19 u - 6 u
= 13 u
13 u = 91
1 u = 91 ÷ 13 = 7
Total number of pencils sold
= 30 u
= 30 x 7
= 210
Answer(s): 210
