Question

How did the answer 1:9 came
Steps​

Answer 1

Answer:

c) 1:9

Step-by-step explanation:

First convert hours to minutes.

We know that,

1 hour = 60mins

therefore 3 hours = 60 × 3 = 180mins

Now, According to the question,

The ratio of 20 mins to 3 hrs

= 20mins to 180mins

Writing in division form-

20/180 mins

Then, Bring it to the lowest form

= 20/180

= 2/18 (divided by 10)

= 1/9 ( divided by 2)

Now, Ratio form-

1/9 = 1:9

Therefore correct option = (c) 1:9