Glen, Perry and Sam sold some pencils. Sam sold 40% of the total number of pencils sold by Perry and Glen. Glen sold 20% of the total number of pencils sold by Perry and Sam. Perry sold 99 more pencils than Sam. Find the total number of pencils sold by all the boys.
| Glen |
Perry |
Sam |
Total |
| 5x6 |
2x6 |
7x6 |
| 1x7 |
5x7 |
6x7 |
| 7 u |
23 u |
12 u |
42 u |
40% =
40100 =
25 20% =
20100 =
15 The total number of pencils is repeated. Make the total number of pencils the same. LCM of 7 and 6 is 42.
Number of more pencils that Perry sold than Sam
= 23 u - 12 u
= 11 u
11 u = 99
1 u = 99 ÷ 11 = 9
Total number of pencils sold
= 42 u
= 42 x 9
= 378
Answer(s): 378
