Select the correct answer. The number of oranges purchased varies directly as the price of the oranges. If 11 oranges cost $2.35, what is the cost of 18 oranges? A. $3.85 B. $85.71 C. $84.24 D. $2.35
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Lets try and create a simple ratio based on the information we have in order to create the equations we need. Lets call X the amount of money is needed to buy 18 oranges.
If 11 oranges cost $2.35,
Then 18 oranges cost $x.
Cross multiply in order to create the equation, 11 times x equal to 18 times 2.35.
11x=18*2.35
11x=42.3
Divide both sides with 11.
11x/11 = 42.3/11
x=3.845