9514 1404 393
Answer:
- 170 km on the ground
- 15 km over water
Step-by-step explanation:
Let t represent the amount of time spent over level ground. Then 5.75-t is the time spent over water. The total distance covered is ...
distance = speed · time
40(t) + 10(5.75 -t) = 185
30t + 57.5 = 185
30t = 127.5
t = 4.25
40t = 170
185 -170 = 15
The hovercraft covered 170 km on the ground and 15 km on the water.
