document.write( "Question 617178: In a class of 40 students, 17 have ridden an airplane, 28 have ridden a boat, 10 have ridden a train, 12 have ridden both an airplane and boat, 3 have ridden a train only and 4 have ridden an airplane only. Some students in the class have not ridden any of the three modes of transportation and an equal number have taken all three.\r
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Algebra.Com's Answer #388187 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! Thank you for telling me about your class. Is there a question? \n" ); document.write( " |