Choose a ratio that forms a proportion with 5/8 A: 50/80 B: 40/80 C: 55/64 D: 50/88

  A:  50/80

Step-by-step explanation:

A ratio will form a proportion with 5/8 when it is equal to 5/8. (A proportion is a statement that two ratios are equal.)

The offered fractions have reduced values of ...

As you can see, only the first answer choice has a value of 5/8, so that is the one that will form a proportion with 5/8:

  5/8 = 50/80

Quadrent III and

Step-by-step explanation:

3 and 4 :)