512 of the runners in a marathon are Koreans. 27 of the remaining runners are Mongolians, 15 of the rest of the runners are Greeks, 53 are Egyptians and 23 are Indonesians. How many more Koreans than Indonesians runners are there?
| Koreans |
Remaining runners |
| 5 u |
7 u |
| |
Mongolians |
Rest of the runners |
| |
2 u |
5 u |
| |
|
Greeks |
Egyptians |
Indonesians |
| |
|
1 u |
4 u |
| |
|
|
53 |
23 |
Total number of Egyptians and Indonesians
= 53 + 23
= 76
4 u = 76
1 u = 76 ÷ 4 = 19
Number of more Koreans runners than Indonesians runners
= 5 u - 23
= 5 x 19 - 23
= 95 - 23
= 72
Answer(s): 72
