math

A speedboat racer travels at a steady rate of 0.75 of a mile per 0.25 of a minute.

How many minutes does it take for the boat to travel 3 miles?
I have 0.75 (is that correct?)

How long will it take for the boat to travel 7.5 miles?
I have 1.88 (is that correct?)

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asked by derrius
  1. First question:

    0.25 min= 1/4 min

    velocity=distance/time=
    0.75/(1/4)=0.75*4 [Becouse 1/(1/4)=4]

    velocity=0.75*4=3 miles/min

    time=1 min

    Second question:

    time=distance/velocity= 7.5/3= 2.5 min

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