Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks. Erica gets paid at home for doing extra chores. Last week, she did 2 loads of laundry and 8 loads of dishes, and her parents paid her $14. The week before, she finished 1 load of laundry and 8 loads of dishes, earning a total of $11. How much does Erica earn for completing each type of chore? Erica earns $____ per load of laundry and $____ per load of dishes.
Q. Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks. Erica gets paid at home for doing extra chores. Last week, she did 2 loads of laundry and 8 loads of dishes, and her parents paid her $14. The week before, she finished 1 load of laundry and 8 loads of dishes, earning a total of $11. How much does Erica earn for completing each type of chore? Erica earns $____ per load of laundry and $____ per load of dishes.
Define Earnings Equations: Let's denote the payment for a load of laundry as l and for a load of dishes as d. From the first week, Erica's earnings give us the equation 2l+8d=14.
Use Elimination Method: From the previous week, the earnings equation is 1l+8d=11.
Subtract Equations: We will use elimination to solve for one of the variables. Multiply the second equation by 2 to align the coefficients of l in both equations: 2l+16d=22.
Solve for d: Subtract the first equation from the modified second equation: \(2l + 16d) - (2l + 8d) = 22 - 14\, which simplifies to (8\)d = 8\.
Substitute d into First Equation: Solving for d, we get d=88, which simplifies to d=1.
Solve for l: Substitute d=1 back into the first equation: 2l+8(1)=14, which simplifies to 2l+8=14.
Solve for l: Substitute d=1 back into the first equation: 2l+8(1)=14, which simplifies to 2l+8=14. Solving for l, we get 2l=14−8, which simplifies to 2l=6. Then, l=26, which simplifies to l=3.
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