.
The system of equation the problem asks to write is THIS:
3T + 3B = 11.25 (1) ("You order three soft tacos and three burritos and your bill totals $11.25")
4T + 2B = 10.00 (2) ("Your friend’s bill is $10.00 for four soft tacos and two burritos")
To solve it, you may use the elimination method. For it, multiply eq(1) by 2 (both sides). Multiply eq(2) by 3 (both sides).
Then subtract eq(1) (modified) from eq(2) (modified).
In this way you eliminate the unknown B and obtain a single equation for the unknown T.
Solve it for T.
When you get the value of T, substitute it into either of two equations (1) or (2) and find B.
That is all.
Happy calculations ! !
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If you want to see many other problems solved in this way, look into the lessons
- Oranges and grapefruits
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- Three methods for solving standard (typical) problems on tickets
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- Roses and vilolets
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- HOW TO algebreze and solve this problem on 2 equations in 2 unknowns
- One unusual problem to solve using system of two equations
- Solving mentally word problems on two equations in two unknowns
- Solving systems of non-linear equations by reducing to linear ones
- System of equations helps to solve a problem for the Thanksgiving day
- Using system of two equations to solve the problem for the day of April, 1
in this site.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Systems of two linear equations in two unknowns".
Save the link to this online textbook together with its description
Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson
to your archive and use it when it is needed.