document.write( "Question 1007322: Ms. snow decide to get a test worth 90 points and contains 25 questions. multiple-choice questions are worth 3 points and word problems are worth 4 points. How many of each type of question are there? \n" ); document.write( "
Algebra.Com's Answer #623261 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "M=number of multiple choice; W=word problems \n" ); document.write( ". \n" ); document.write( "M+W=25 \n" ); document.write( "M=25-W \n" ); document.write( ". \n" ); document.write( "3M+4W=90 \n" ); document.write( "3(25-W)+4W=90 \n" ); document.write( "75-3W+4W=90 \n" ); document.write( "W=15 \n" ); document.write( "ANSWER 1: There were 15 word problems. \n" ); document.write( ". \n" ); document.write( "M=25-W \n" ); document.write( "M=25-15 \n" ); document.write( "M=10 \n" ); document.write( "ANSWER 2: There were 10 multiple choice problems. \n" ); document.write( ". \n" ); document.write( "CHECK: \n" ); document.write( "3M+4W=90 \n" ); document.write( "3(10)+4(15)=90 \n" ); document.write( "30+60=90 \n" ); document.write( "90=90 \n" ); document.write( " \n" ); document.write( " |