310 of the runners in a marathon are Koreans. 27 of the remaining runners are Greeks, 25 of the rest of the runners are Indonesians, 58 are Vietnamese and 32 are Mongolians. How many more Koreans than Mongolians runners are there?
| Koreans |
Remaining runners |
| 3 u |
7 u |
| |
Greeks |
Rest of the runners |
| |
2 u |
5 u |
| |
|
Indonesians |
Vietnamese |
Mongolians |
| |
|
2 u |
3 u |
| |
|
|
58 |
32 |
Total number of Vietnamese and Mongolians
= 58 + 32
= 90
3 u = 90
1 u = 90 ÷ 3 = 30
Number of more Koreans runners than Mongolians runners
= 3 u - 32
= 3 x 30 - 32
= 90 - 32
= 58
Answer(s): 58
