Owen, Ben and Fred sold some markers. Fred sold 20% of the total number of markers sold by Ben and Owen. Owen sold 30% of the total number of markers sold by Ben and Fred. Owen sold 290 less markers than Ben. Find the total number of markers sold by all the boys.
| Owen |
Ben |
Fred |
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 markers is repeated. Make the total number of markers the same. LCM of 6 and 13 is 78.
Number of less markers that Owen sold than Ben
= 47 u - 18 u
= 29 u
29 u = 290
1 u = 290 ÷ 29 = 10
Total number of markers sold
= 78 u
= 78 x 10
= 780
Answer(s): 780
