Ian, Tommy and Cole sold some staplers. Cole sold 20% of the total number of staplers sold by Tommy and Ian. Ian sold 30% of the total number of staplers sold by Tommy and Cole. Ian sold 145 less staplers than Tommy. Find the total number of staplers sold by all the boys.
| Ian |
Tommy |
Cole |
Total |
| 5x13 |
1x13 |
6x13 |
| 3x6 |
10x6 |
13x6 |
| 18 u |
47 u |
13 u |
78 u |
20% =
20100 =
15 30% =
30100 =
310 The total number of staplers is repeated. Make the total number of staplers the same. LCM of 6 and 13 is 78.
Number of less staplers that Ian sold than Tommy
= 47 u - 18 u
= 29 u
29 u = 145
1 u = 145 ÷ 29 = 5
Total number of staplers sold
= 78 u
= 78 x 5
= 390
Answer(s): 390
