Cody, Japheth and Tommy sold some pencils. Tommy sold 40% of the total number of pencils sold by Japheth and Cody. Cody sold 30% of the total number of pencils sold by Japheth and Tommy. Japheth sold 72 more pencils than Tommy. Find the total number of pencils sold by all the boys.
| Cody |
Japheth |
Tommy |
Total |
| 5x13 |
2x13 |
7x13 |
| 3x7 |
10x7 |
13x7 |
| 21 u |
44 u |
26 u |
91 u |
40% =
40100 =
25 30% =
30100 =
310 The total number of pencils is repeated. Make the total number of pencils the same. LCM of 7 and 13 is 91.
Number of more pencils that Japheth sold than Tommy
= 44 u - 26 u
= 18 u
18 u = 72
1 u = 72 ÷ 18 = 4
Total number of pencils sold
= 91 u
= 91 x 4
= 364
Answer(s): 364
