310 of the runners in a marathon are Vietnamese. 27 of the remaining runners are Indonesians, 35 of the rest of the runners are Egyptians, 42 are Greeks and 24 are Mongolians. How many more Vietnamese than Mongolians runners are there?
| Vietnamese |
Remaining runners |
| 3 u |
7 u |
| |
Indonesians |
Rest of the runners |
| |
2 u |
5 u |
| |
|
Egyptians |
Greeks |
Mongolians |
| |
|
3 u |
2 u |
| |
|
|
42 |
24 |
Total number of Greeks and Mongolians
= 42 + 24
= 66
2 u = 66
1 u = 66 ÷ 2 = 33
Number of more Vietnamese runners than Mongolians runners
= 3 u - 24
= 3 x 33 - 24
= 99 - 24
= 75
Answer(s): 75
