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27

Part of 1950 AMC 12/AHSME

Problems(1)

AHSME 1950- part 2

Source:

7/20/2008
A car travels 120120 miles from AA to BB at 3030 miles per hour but returns the same distance at 4040 miles per hour. The average speed for the round trip is closest to:
<spanclass=′latex−bold′>(A)</span> 33 mph<spanclass=′latex−bold′>(B)</span> 34 mph<spanclass=′latex−bold′>(C)</span> 35 mph<spanclass=′latex−bold′>(D)</span> 36 mph<spanclass=′latex−bold′>(E)</span> 37 mph<span class='latex-bold'>(A)</span>\ 33\text{ mph} \qquad <span class='latex-bold'>(B)</span>\ 34\text{ mph} \qquad <span class='latex-bold'>(C)</span>\ 35\text{ mph} \qquad <span class='latex-bold'>(D)</span>\ 36\text{ mph} \qquad <span class='latex-bold'>(E)</span>\ 37\text{ mph}