That depends what it is 90 of. If it is 90 seconds, this is equal to 1 minute, 30 seconds.
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From seconds to minutes: 1 minute/60 seconds For 90 seconds: (90 seconds)*(1 minute/60 seconds)=1.5 minutes
There are 5400 seconds in 90 minutes which is greater than 540 seconds
Is 90 minutes the same as 540 seconds
There are 60 seconds in 1 minute, therefore 60x90 = 5400 seconds in 90 minutes.
There are 60 seconds in one minute. Therefore, 90 minutes is equal to 90 x 60 = 5400 seconds.