document.write( "Question 1026102: a class of 165 students went on a field trip they took 9 vehicles some were cars and some were buses.find the number of cars and number of buses they took if each car holds 5 students and each bus holds 45 students \n" ); document.write( "
Algebra.Com's Answer #641350 by addingup(3677)\"\" \"About 
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c+b = 9 subtract b both sides:
\n" ); document.write( "c = 9-b
\n" ); document.write( "5c+45b= 165 substitute for c
\n" ); document.write( "5(9-b)+45b = 165
\n" ); document.write( "45-5b+45b = 165
\n" ); document.write( "40b = 120
\n" ); document.write( "b = 3 there were 3 buses and
\n" ); document.write( "9-3= 6 cars
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\n" ); document.write( "Check:
\n" ); document.write( "3(45)+6(5) = 135+30 = 165 Correct
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