1 hour = 60 minutes
→ 4½ hours = 4.5 × 60 minutes = 270 minutes
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(4 × 60) + 30 = 270 minutes.
Note: there are 60 minutes in 1 hour, so half an hour is 30 minutes.
Four and one half hours in 270 minutes
210 minutes in 3 in half hours
four hours and twenty minutes.
Four hours and fifty minutes
3.5 hours is 210 minutes.