A truck 4

A truck covers a particular distance in 3 hours with a speed of 60 miles per hour. If the speed is increased by 30 miles per hour, find the time taken by the truck to cover the same distance in hours.

Correct answer:

t2 =  2 h

Step-by-step explanation:

t1=3 h v1=60 mi/h  v2=v1+30=60+30=90 mi/h  s = v1 t1 = v2 t2  s=v1 t1=60 3=180 mi  t2=s/v2=180/90=2 h

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