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a.
To find: The number of tubes that each girl plan to bake and the time that each used to oven.
a.
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Answer to Problem 25PPS
M plan to bake 7 tubes of cookies and J plans to bake 3 tubes of cookies.
Time taken by M is 56 mins and time take by J is 36 mins.
Explanation of Solution
Given:
They need to bake 264 cookies. Each tube of cookies contains 36 cookies. It takes 8 minutes to bake a container of cookies, but it takes 12 minutes for the person J.
Calculation:
Let M bakes
Then, for the time constraint, the equation becomes
For the number of cookies, the equation can be written as
So, M plan to bake 7 tubes of cookies and J plans to bake 3 tubes of cookies.
Time taken by M is
b.
To explain the solution process.
b.
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Explanation of Solution
Given:
They need to bake 264 cookies. Each tube of cookies contains 36 cookies. It takes 8 minutes to bake a container of cookies, but it takes 12 minutes for the person J.
Calculation:
Let M bakes
Then, for the time constraint, the equation becomes
For the number of cookies, the equation can be written as
Solving the two equation gives:
Rounding off to the nearest integer gives:
So, M plan to bake 7 tubes of cookies and J plans to bake 3 tubes of cookies.
Time taken by M is
c.
To write the assumptions made in solution process.
c.
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Explanation of Solution
The following are the assumptions made in the solution process:
- Both M and J cannot bake their cookies simultaneously.
- Girls were able to make the entire tube of cookies in one batch.
- The amount of time required to transfer baked cookies from oven and unbaked cookies to the oven is negligible.
Chapter 6 Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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