Question 837094
Average speed is always:
( total distance traveled ) / ( total time spent traveling )
Total distance = {{{ 2 + 2 = 4 }}} mi
Total time = {{{ 7 + 8 = 15 }}} min
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Ave speed = {{{ 4/15 }}} mi/min
To get mi/hr, do the conversion:
( mi/min ) x ( min/hr ) = mi/hr
{{{ (4/15)*(60/1) = 16 }}} mi/hr