On a certain transatlantic crossing, 20 percent of a ship's passengers held round-trip tickets and also took their cars abroad the ship. If 50 percent of the passengers with round-trip tickets did not take their cars abroad the ship, what percent of the ship's passengers held round-trip tickets? Choices.
A) 33.3%	B) 40%	C) 50%	D) 60%	E) 66.6%
0.20P = RT + C   0.5(RT) = no C   =&gt; 0.50(RT) had C   0.20P = 0.50(RT)   RT/P = 40%   Answer - 40%
<result>B</result>
On a certain transatlantic crossing, 20 percent of a ship's passengers held round-trip tickets and also took their cars abroad the ship. If 50 percent of the passengers with round-trip tickets did not take their cars abroad the ship, what percent of the ship's passengers held round-trip tickets?