Mia spent 30 minutes answering the math questions on the exam. This was Three-fifths of the total amount of time allotted for this section of the exam. To determine the total amount of time allotted for this section of the exam, Mia set up and solved the equation as shown below.

Three-fifths x = 30. Five-thirds (three-fifths) x = 30 (three-fifths). X = 18.

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Answer:

Mia should have multiplied both sides of the equation by 5/3.

Step-by-step explanation:

Let's analyze Mia's solution:

Mia set up the equation:

[tex] \dfrac{3}{5}x = 30 [/tex]

To solve for [tex] x [/tex], she multiplied both sides by [tex] \dfrac{5}{3} [/tex], which is the reciprocal of [tex] \dfrac{3}{5} [/tex]:

[tex] \dfrac{5}{3} \times \dfrac{3}{5}x = 30 \times \dfrac{5}{3} [/tex]

On the left side, [tex] \dfrac{5}{3} \times \dfrac{3}{5} [/tex] simplifies to 1, leaving us with [tex] x [/tex].

[tex] x = 30 \times \dfrac{5}{3} [/tex]

Now, we can simplify [tex] 30 \times \dfrac{5}{3} [/tex]:

[tex] x = 30 \times \dfrac{5}{3} = 50 [/tex]

However, it seems there was a miscalculation in Mia's solution. When we multiply [tex] 30 [/tex] by [tex] \dfrac{5}{3} [/tex], we should get [tex] 50 [/tex], not [tex] 18 [/tex].

Therefore, the correct solution should be:

[tex] x = 50 [/tex]

So, the answer is:

Mia should have multiplied both sides of the equation by 5/3.

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