60 seconds = 1 minute so 615 seconds = 15/60 = 1/4 or 0.25 minutes.
60 seconds = 1 minute so 615 seconds = 15/60 = 1/4 or 0.25 minutes.
60 seconds = 1 minute so 615 seconds = 15/60 = 1/4 or 0.25 minutes.
60 seconds = 1 minute so 615 seconds = 15/60 = 1/4 or 0.25 minutes.
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