Three times a larger number is 30 more than 5 times a smaller number. The sum of the larger number and 5 times the smaller number is 50.

Let x be the smaller number and y be the larger number.

Create a system and graph it to find the solution.

What are the two numbers?

x =
and y =

1 answer

Let's set up the system of equations based on the problem statement.

Let \( x \) be the smaller number and \( y \) be the larger number.

We can formulate the two equations from the problem statements as follows:

  1. From the first statement: "Three times a larger number is 30 more than 5 times a smaller number." \[ 3y = 5x + 30 \]

  2. From the second statement: "The sum of the larger number and 5 times the smaller number is 50." \[ y + 5x = 50 \]

Now we have a system of equations: \[ \begin{align*}

  1. & \quad 3y = 5x + 30 \
  2. & \quad y + 5x = 50 \end{align*} \]

Solve the system of equations:

First, we can solve the second equation for \( y \): \[ y = 50 - 5x \]

Now, substitute \( y \) into the first equation: \[ 3(50 - 5x) = 5x + 30 \]

Distributing the \( 3 \): \[ 150 - 15x = 5x + 30 \]

Next, combine like terms by moving all terms involving \( x \) to one side and constants to the other: \[ 150 - 30 = 15x + 5x \ 120 = 20x \]

To solve for \( x \): \[ x = \frac{120}{20} = 6 \]

Now substitute \( x = 6 \) back into the equation for \( y \): \[ y = 50 - 5(6) \ y = 50 - 30 = 20 \]

Solution:

The smaller number \( x \) is 6, and the larger number \( y \) is 20.

So, we have: \[ x = 6 \quad \text{and} \quad y = 20 \]