310 of the runners in a marathon are Koreans. 27 of the remaining runners are Indians, 25 of the rest of the runners are Filipinos, 54 are Japanese and 27 are Vietnamese. How many more Koreans than Vietnamese runners are there?
| Koreans |
Remaining runners |
| 3 u |
7 u |
| |
Indians |
Rest of the runners |
| |
2 u |
5 u |
| |
|
Filipinos |
Japanese |
Vietnamese |
| |
|
2 u |
3 u |
| |
|
|
54 |
27 |
Total number of Japanese and Vietnamese
= 54 + 27
= 81
3 u = 81
1 u = 81 ÷ 3 = 27
Number of more Koreans runners than Vietnamese runners
= 3 u - 27
= 3 x 27 - 27
= 81 - 27
= 54
Answer(s): 54
