Answer:
2 is the number of hours using electronic devices :
1 hours playing sports
Also known as 2:1
Explanation:
The first step is to simplify the ratio of hours using electronic devices to hours playing sports, which is 30 : 15
30 : 15
If I divide each number by 5 to simplify you get:
6 : 3
Then we divide each number by 2 to simplify:
2 : 1
That is how you get the answer for the ratio of 2:1.
I hope I helped and have a great day! ^-^