Geologists have covered a 75 km route. On the first day they covered 3/25 of the entire route

Geologists have covered a 75 km route. On the first day they covered 3/25 of the entire route, and on the second 4/25 of the entire route. What way did geologists go during these two days?

Solution of the problem: the total path covered 75 km. 1 day = 3/25; 2 day 4/25 route. Let’s find which way we went in two days, for this:
1) 75: 25 * 3 = 9 (km) – passed geologists on the first day.
2) 75: 25 * 4 = 12 (km) – passed geologists on the second day.
3) 9 + 12 = 21 (km)
Answer: Geologists have covered 21 km during these 2 days. on the first day we covered 9 km, and on the second day 12 km.