Question

At Still Bay Middle School, 3 out of 5 teachers have earned their masters degrees. If there are 30 teachers at the school, how many of them have earned their masters degrees?
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Answer 1

Answer:

18 out of 30 teachers have earned their masters degree.

Step-by-step explanation:

Lets represent the amount who have earned their masters degree using 3:5.

The total number is theoretically 5. The real total is given to us - 30. But 3 cannot be the number who have gotten their masters.

x:30 = 3:5 or x / 30 = 3 / 5

We know 30 ÷ 5 is 6. So, the answer should be 3 × 6 which is 18.

18:30

..Hope it helps