Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.Livingston's Bakery sold one customer 8 dozen chocolate cookies and 10 dozen oatmeal cookies for $104. The bakery also sold another customer 4 dozen chocolate cookies and 3 dozen oatmeal cookies for $44. How much do the cookies cost?A dozen chocolate cookies cost $____, and a dozen oatmeal cookies cost $____.
Q. Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.Livingston's Bakery sold one customer 8 dozen chocolate cookies and 10 dozen oatmeal cookies for $104. The bakery also sold another customer 4 dozen chocolate cookies and 3 dozen oatmeal cookies for $44. How much do the cookies cost?A dozen chocolate cookies cost $____, and a dozen oatmeal cookies cost $____.
Define Cookie Costs: Let's denote the cost of a dozen chocolate cookies as c dollars and the cost of a dozen oatmeal cookies as o dollars.The first customer bought 8 dozen chocolate cookies and 10 dozen oatmeal cookies for \(104\). This can be represented by the equation:\(\newline\)\( 8c + 10o = 104 \)
First Customer Purchase: The second customer bought \(4\) dozen chocolate cookies and \(3\) dozen oatmeal cookies for 44. This can be represented by the equation:4c+3o=44
Second Customer Purchase: We now have a system of equations to solve:8c+10o=1044c+3o=44We can use either substitution or elimination to solve this system. Let's use the elimination method.
Solve System of Equations: To eliminate one of the variables, we can multiply the second equation by 2 to make the coefficient of c the same in both equations:2(4c+3o)=2(44)8c+6o=88
Eliminate Variable c: Now we subtract the new equation from the first equation to eliminate c:(8c+10o)−(8c+6o)=104−884o=16
Find Cost of Oatmeal Cookies: Solving for o, we get:o=416o=4So, a dozen oatmeal cookies cost \(4\).
Substitute to Find Cost of Chocolate Cookies: Now we can substitute the value of \( o \) into one of the original equations to find \( c \). Let's use the second equation:\(\newline\)\( 4c + 3(4) = 44 \)\(\newline\)\( 4c + 12 = 44 \)\(\newline\)\( 4c = 44 - 12 \)\(\newline\)\( 4c = 32 \)
Substitute to Find Cost of Chocolate Cookies: Now we can substitute the value of \( o \) into one of the original equations to find \( c \). Let's use the second equation:\(\newline\)\( 4c + 3(4) = 44 \)\(\newline\)\( 4c + 12 = 44 \)\(\newline\)\( 4c = 44 - 12 \)\(\newline\)\( 4c = 32 \)Solving for \( c \), we get:\(\newline\)\( c = \frac{32}{4} \)\(\newline\)\( c = 8 \)\(\newline\)So, a dozen chocolate cookies cost 8.
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