Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.Dr. Harvey, a pediatrician, has 2 annual checkups and 3 sick visits scheduled next Tuesday, which will fill a total of 190 minutes on her schedule. Next Wednesday, she has 1 annual checkup and 3 sick visits on the schedule, which should take 140 minutes. How much time is allotted for each type of appointment?The time allotted is _ minutes for an annual checkup and _ minutes for a sick visit.
Q. Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.Dr. Harvey, a pediatrician, has 2 annual checkups and 3 sick visits scheduled next Tuesday, which will fill a total of 190 minutes on her schedule. Next Wednesday, she has 1 annual checkup and 3 sick visits on the schedule, which should take 140 minutes. How much time is allotted for each type of appointment?The time allotted is _ minutes for an annual checkup and _ minutes for a sick visit.
Define Variables: Let's denote the time for an annual checkup as a minutes and the time for a sick visit as s minutes. Dr. Harvey has 2 annual checkups and 3 sick visits scheduled next Tuesday, taking up 190 minutes. This gives us the equation 2a+3s=190.
Equations for Tuesday: For next Wednesday, Dr. Harvey has 1 annual checkup and 3 sick visits scheduled, taking up 140 minutes. This gives us the equation a+3s=140.
Equations for Wednesday: We now have a system of two equations. To use elimination, we need to eliminate one of the variables, a or s. We choose to eliminate a by multiplying the second equation by 2, the coefficient of a in the first equation.
Elimination Method: Multiplying the second equation by 2 gives us 2a+6s=280.
Multiply Second Equation: We now subtract the first equation from the new second equation to eliminate a. This gives us 3s−6s=280−190, which simplifies to −3s=−90.
Subtract Equations: Dividing both sides of −3s=−90 by −3 gives us s=30. This means each sick visit is allotted 30 minutes.
Find Sick Visit Time: We substitute s=30 into the first equation 2a+3s=190 and solve for a. This gives us 2a+3(30)=190, which simplifies to 2a+90=190.
Substitute and Solve: Subtracting 90 from both sides gives us 2a=100. Dividing both sides by 2 gives us a=50. This means each annual checkup is allotted 50 minutes.
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