How many minutes will to drive to Los Angeles from San Francisco if an average speed of 72 mi/hr is maintained?

Question

The distance between the two cities is 405 miles.

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Answer 1 · 2017-05-28T05:39:23

It wll take $320$ minutes to drive to Los Angeles from San Francisco.

Distance by road between Los Angeles and San Francisco using
I-5 N is $383$ miles.

As the average speed is $72$ miles per hour,

it will take $383/72=5 23/72$ hours

$5$ hours is $5xx60=300$ minutes and $23/72$ hours is $23/72xx60=23/cancel72^6xxcancel60^5=115/6$ or $19.17$ minutes

i.e. a total of $319.17$ or say about $320$ minutes.

Hence, it wll take $320$ minutes to drive to Los Angeles from San Francisco.