Greta uses 3 ounces of pasta to make 3/4 of a serving of pasta. How many ounces of pasta are there per serving?

1 Answer
Ben
May 3, 2018

4 ounces, and here's why:

Explanation:

We're given a ratio of ounces to servings; 3 ounces of pasta is 3/4 of a serving. If we write this out as an algebra equation:

#3/4S=3#

Where #S# is the serving size. Solving for #S#, we'll multiply both sides by the reciprocal of #S#'s coefficient:

#cancel(3/4)Sxxcolor(red)(cancel(4/3))=cancel(3)xxcolor(red)(4/cancel(3))#

#color(green)(S=4lArr ans)#

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