512 of the runners in a marathon are Greeks. 27 of the remaining runners are Koreans, 35 of the rest of the runners are Mongolians, 51 are Italians and 31 are Japanese. How many more Greeks than Japanese runners are there?
| Greeks |
Remaining runners |
| 5 u |
7 u |
| |
Koreans |
Rest of the runners |
| |
2 u |
5 u |
| |
|
Mongolians |
Italians |
Japanese |
| |
|
3 u |
2 u |
| |
|
|
51 |
31 |
Total number of Italians and Japanese
= 51 + 31
= 82
2 u = 82
1 u = 82 ÷ 2 = 41
Number of more Greeks runners than Japanese runners
= 5 u - 31
= 5 x 41 - 31
= 205 - 31
= 174
Answer(s): 174
