310 of the runners in a marathon are Koreans. 27 of the remaining runners are Chinese, 25 of the rest of the runners are Indians, 50 are Japanese and 10 are Egyptians. How many more Koreans than Egyptians runners are there?
| Koreans |
Remaining runners |
| 3 u |
7 u |
| |
Chinese |
Rest of the runners |
| |
2 u |
5 u |
| |
|
Indians |
Japanese |
Egyptians |
| |
|
2 u |
3 u |
| |
|
|
50 |
10 |
Total number of Japanese and Egyptians
= 50 + 10
= 60
3 u = 60
1 u = 60 ÷ 3 = 20
Number of more Koreans runners than Egyptians runners
= 3 u - 10
= 3 x 20 - 10
= 60 - 10
= 50
Answer(s): 50
