If 3 apple cost $4. Then the cost of one apple will be $1.33 per apple.
A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero. A proportionate expression is one in which two items are equal.
If 3 apple cost $4.
Then the cost of the one apple will be given by the quotient of 4 and 3.
Then the price of one apple will be
⇒ $4/3
⇒$1.33 per apple
Thus, the cost of one apple will be $1.33 per apple.
More about the ratio and the proportion link is given below.
https://brainly.com/question/14335762
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