Atruck with a heavy load drove from boston to new york at 45 mph. after unloading, it returned from new york to boston at a speed of 65 mph. what was its average speed for the whole trip?

Average speed: 585/11 or 53 2/11

Step-by-step explanation:

Let distance from New York to Boston, and vice-versa, be D

Then, time taken to travel from Boston to New York is: D/45

Also, time taken to travel from New York to Boston is: D/65

Total time taken for entire trip: D/45+D/65

Average speed: total distance/total time

Average speed: 2D/22D/585

Average speed:  53 2/11 or 585/11 mph

answer: the answer to your question is parallel

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!