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A boat covered 5/9 of a journey at an average speed of 25
mph. Then, it travelled the remaining 120 miles at another
speed. If the total time of the whole journey was 8.5 hours,
what was the amount of time the boat spent on the remaining
120 miles? (Write as a decimal.)
_____ hours


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Respuesta :

Answer:

Thus, the time for the remaining 120 miles: 8.5 - 6 = 2.5 h

Explanation:

The remaining 120 miles was (1 - 5/9 = 4/9) of the total journey.

Then, total distance: 120 ÷ 4/9 = 120 × 9/4 = 270 miles

The distance for 25 mph: 270 × 5/9 = 150 miles

The time for 25 mph: 150 ÷ 25 = 6 h

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