Richard goes on a 6-mile jog one morning. he jogs the first two miles at an average speed of 6 mph. he progressively slows down; his average speed during the next two miles is 4 mph. he walks the remaining two miles at an average speed of 3 mph. what is richard's average speed, in miles per hour?

Average speed = 4 mph

Step-by-step explanation:

Given as

Total distance to travel = 6 mile

now, for first 2 mile the avg speed = 6 mph

for next 2 mile the avg speed = 4 mph

and for rest 2 mile the avg speed = 3 mph

so,  the average speed of the Richard =

Total Avg speed =

Or,                       = ×12

                           = 4

So the total Average speed = 4 mph         (Answer)

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step-by-step explanation: