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maw [93]
3 years ago
8

NEED EXPLANATION PLEASE

Mathematics
1 answer:
Brrunno [24]3 years ago
8 0

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.

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