Students in band are selling oranges and grapefruit to earn money for a trip. mrs. whitten purchased three boxes of oranges and two boxes of grapefruit from a student for a total of $22.50. mr. rutig purchased one bag of oranges and four boxes of grapefruit, spending a total of $28.50. how much is one box of oranges?

The cost of one box of oranges = $3.3

Step-by-step explanation:

Let x be cost of one box of oranges and y be the cost of one box of grapefruit.

We have been given that Mrs. Whitten purchased 3 boxes of oranges and 2 boxes of grapefruit from a student for a total of $22.50. We can represent this information as:

Mr. Rutig purchased 1 box of oranges and four boxes of grapefruit, spending a total of $28.50. We can represent this information as:

We will solve our system of linear equations using substitution method.

From equation (1) we will get,

Substituting y's value in equation (2) we will get,

Upon distributing 2 we will get,

Therefore, the cost of one box of oranges is $3.3.

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: