document.write( "Question 963330: How would I setup this problem:
\n" );
document.write( "All 147 students in the Math Club went on a field trip. some students rode in vans which hold 9 students each and some students rode in buses which hold 15 students each. How many of each vehicle did they use if there were 13 vehicles total? \n" );
document.write( "
Algebra.Com's Answer #588530 by macston(5194) You can put this solution on YOUR website! \n" ); document.write( "V=number of vans; B=number of buses \n" ); document.write( "V+B=13 \n" ); document.write( "V=13-B Use this to substitute for V. \n" ); document.write( "9V+15B=147 Substitute for V from above. \n" ); document.write( "9(13-B)+15B=147 \n" ); document.write( "117-9B+15B=147 Subtract 117 from each side. \n" ); document.write( "6B=30 Divide each side by 6 \n" ); document.write( "B=5 ANSWER 1: There were 5 buses. \n" ); document.write( "V=13-B=13-5=8 ANSWER 2: There were 8 vans. \n" ); document.write( "CHECK: \n" ); document.write( "9V+15B=147 \n" ); document.write( "9(8)+15(5)=147 \n" ); document.write( "72+75=147 \n" ); document.write( "147=147 \n" ); document.write( " |