Question

felicity takes an hour to travel 30 miles .on the way back she travels twice as fast. what is her average speed?​

Answer 1

45 mph

Explanation:

Her speed, going, is (30 miles) / (1 hour), or 30 mph. Returning, it's 60 mph. Her average speed is (30 + 30) miles divided by 1.5 hours, or 60/1.5 mph, or 45 mph. This is because it takes her 1 hour to make the outgoing trip and 1/2 hour to make the resutrn trip.

Answer 2

she has travelled 30miles in 1/2 during her way back

average speed = total distance / total time

60miles / 1.5 hrs

40 miles per hour is her average speed