Question

Darius took six hours to drive home from college . He drove a total distance of 336 miles. he was able to average 60 mph for part of the trip but had to slow down to an average of 48 mph. how many hours did you drive at each speed?

Answer 1

Data:

d = 336 mi (total distance)

v1 = 60 m/h (speed 1)

v2 = 48 m/h (speed 2)

In order to compute the time in hours, we can divide the distance by each speed.

`\begin{gathered} t_1=(d)/(v_1)=(336mi)/(60(mi)/(h))=5.6h \\ t_2=(d)/(v_2)=(336mi)/(48(mi)/(h))=7h \end{gathered}`

Therefore, driving at 60mph Darius will spend 5.6 hours and driving at 48 mph he will spend 7 hours.