i need with this math problem. I am confused on how to do it. If you could help me it would be great. There are 2 parts to this problem. I need help with both problems.
she took a total of 60 minutes she answered both mulitiple choice and extended response in the total time which is 60 minutes she took 2 minutes on rach multiple choice question and 6 minutes for the extended response let x=number of multiple choice questions let y=number of extended response questions we can deduce that total time =x*2+y*6 60=2x+6y also we can deduce 20=x+y since 20 ia the sum of multiple choice and extended response for part 2 we just solve the system of equations 60=2x+6y 20=x +y lets multiply the second equation by 2 so we can get rid of x 60=2x+6y 40=2x+2y subtracting the two equations from each other to yields 20=0 +4y y=5 to get x we substitute in one of the equations we derived from question 1 x+y=20 substituting y for its value we get x+5=20 x=15
