Explanation:
To solve this problem, we need to divide the amount of hot chocolate Rhianna made (3/5 of a quart) by the amount of hot chocolate that can fit in each mug (1/5 of a quart).
To divide fractions, we can multiply the first fraction by the reciprocal of the second fraction. In this case, we want to divide 3/5 by 1/5, so we can rewrite the problem as:
(3/5) ÷ (1/5)
To divide by a fraction, we can flip the second fraction and multiply, so we get:
(3/5) x (5/1) = 3
This means that Rhianna can fill 3 mugs with the hot chocolate she made.