Base on the given ratio, it will take the phone 5/6 hours to charge completely
The given parameter can be represented as:
Ratio = Time : Proportion
So, we have:
Ratio = 1/3 : 2/5
To charge fully, we have:
Time : 1 = 1/3 : 2/5
Express as fraction
Time/1 = 1/3/ 2/5
Evaluate
Time = 5/6
Hence, it will take the phone 5/6 hours to charge completely
Read more about ratios at:
https://brainly.com/question/2784798
#SPJ1