Answer :

2.7 hrs x 60 (for minutes) = amount of minutes
amount of minutes x 60 (for seconds) = amount of seconds.

IN this case

2.7 x 60 = 162 minutes

162 x 60 = 9720 seconds.

so the two rations are 1:60 or (hr: min) then 1:60 or (min: seconds)

hope this helps :D

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