The length of the 8 races in meters is 24000 meters
Angle UTV is basically given: it's 138°.
Moreover, since UTV is isosceles, the other two angles have the same measure x. We thus have

So, TUV is 21°, and VUW is complementary, so it must be 69° so that they sum up to 90°
The answer = 4 days
Jon Sara
11×4=44+96=140. 20×4=80+60=140.
I think that the answer is 5. But,it could be some thing else