Question 1197202
A truck with a heavy load drove from boston to new york at 45 mph. After unloading, it returned to Boston at a speed of 65mph. WHat was it's [sic] average speed for the whole trip?
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Avg speed of a RT = {{{2*v[1]*v[2]/(v[1]+v[2])}}}
= 2*45*65/(110) mi/hr
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it's = it is