Question 638284
Show that 1.21 hr is the same as 1 hr, 12 min, 36 sec.
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1.21 hr = 1 hr+0.21*(60 min) = 1hr + 12.6 min
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= 1 hr 12 min + 0.6(60) sec
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= 1 hr 12 min + 36 seconds

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Cheers,
Stan H.
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