Answer:
Given condition: A grocery store display has 60 oranges and 18 apples.
Then,
Number of oranges = 60 and
Number of apples = 18.
Then, we use ratios to make comparisons between two things.
When we express a ratios in words we use the word ''to'' then we say that the ratio of something to something else.
Ratio of oranges to apples =

then,
Ratio of oranges to apples =

Divide numerator and denominator by 6, we get
Ratio of oranges to apples =
which is in the simplest fractional form.