Math Problem Statement

A restaurant serves two types of fish dinners- small for $5.99 each and large for $8.99. One day, there were 134 total orders of fish, and the total receipts for these 134 orders was $1024.66. How many small dinners and how many large dinners were ordered?

Solution

This problem can be solved using a system of equations. Let's define:

  • xx as the number of small dinners ordered (each costing $5.99).
  • yy as the number of large dinners ordered (each costing $8.99).

From the problem, we know two things:

  1. The total number of dinners ordered is 134: x+y=134x + y = 134

  2. The total receipts from these 134 dinners amount to $1024.66: 5.99x+8.99y=1024.665.99x + 8.99y = 1024.66

We now have the system of equations:

  1. x+y=134x + y = 134
  2. 5.99x+8.99y=1024.665.99x + 8.99y = 1024.66

We can solve this system step-by-step. First, solve for yy in terms of xx using the first equation:

y=134xy = 134 - x

Now substitute this expression for yy into the second equation:

5.99x+8.99(134x)=1024.665.99x + 8.99(134 - x) = 1024.66

Now solve for xx and then yy.

Let me calculate that for you. sympy import symbols, Eq, solve

Define variables

x, y = symbols('x y')

Define the system of equations

eq1 = Eq(x + y, 134) eq2 = Eq(5.99x + 8.99y, 1024.66)

Solve the system of equations

solution = solve((eq1, eq2), (x, y)) solutionThe solution to the system of equations is:

  • x=60x = 60 small dinners ordered
  • y=74y = 74 large dinners ordered

So, 60 small dinners and 74 large dinners were ordered.

Would you like any further explanation or have additional questions on this topic?

Here are 5 related questions to expand your understanding:

  1. How do you solve systems of equations using substitution or elimination?
  2. What happens if the prices of the dinners were changed?
  3. How do you solve systems of equations involving decimals and fractions?
  4. Can this problem be solved with matrices?
  5. How would you solve this if there were more than two types of dinners?

Tip: When dealing with word problems, always define your variables clearly and translate the problem into a system of equations for easy solving.

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Equations
Linear Equations

Formulas

x + y = 134
5.99x + 8.99y = 1024.66

Theorems

Substitution Method
Linear System Solution

Suitable Grade Level

Grades 7-9