Jeremy, Henry and David sold some markers. David sold 40% of the total number of markers sold by Henry and Jeremy. Jeremy sold 30% of the total number of markers sold by Henry and David. Jeremy sold 161 less markers than Henry. Find the total number of markers sold by all the boys.
| Jeremy |
Henry |
David |
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 markers is repeated. Make the total number of markers the same. LCM of 7 and 13 is 91.
Number of less markers that Jeremy sold than Henry
= 44 u - 21 u
= 23 u
23 u = 161
1 u = 161 ÷ 23 = 7
Total number of markers sold
= 91 u
= 91 x 7
= 637
Answer(s): 637
