Billy, Liam and Riordan sold some staplers. Riordan sold 40% of the total number of staplers sold by Liam and Billy. Billy sold 20% of the total number of staplers sold by Liam and Riordan. Liam sold 77 more staplers than Riordan. Find the total number of staplers sold by all the boys.
| Billy |
Liam |
Riordan |
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 staplers is repeated. Make the total number of staplers the same. LCM of 7 and 6 is 42.
Number of more staplers that Liam sold than Riordan
= 23 u - 12 u
= 11 u
11 u = 77
1 u = 77 ÷ 11 = 7
Total number of staplers sold
= 42 u
= 42 x 7
= 294
Answer(s): 294
