document.write( "Question 822406: A hot air balloon 2,100 ft above the ground can descend at a rate of 1.5 ft/s. The balloon is scheduled to land at 3:30 P.M. When should the balloonist start descending? \n" ); document.write( "
Algebra.Com's Answer #494823 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "s = d / t
\n" ); document.write( "t = d / s
\n" ); document.write( "---
\n" ); document.write( "descent time:
\n" ); document.write( "t = (2100 ft) / (1.5 ft/sec)
\n" ); document.write( "t = 1400 seconds
\n" ); document.write( "---
\n" ); document.write( "time of landing:
\n" ); document.write( "3:30 pm = 03 hours and 30 minutes
\n" ); document.write( "30 minutes * (60 sec/min) = 1800 seconds
\n" ); document.write( "---
\n" ); document.write( "start descent at:
\n" ); document.write( "1800 - 1400 = 400 seconds past 3 PM
\n" ); document.write( "400 seconds * (1/60 min/sec) = 6.666666 minutes
\n" ); document.write( "whole minutes in 6.666666: 6 minutes
\n" ); document.write( "(with 0.666666 minutes remaining)
\n" ); document.write( "(0.666666 min * 60 sec/min) = 40 seconds
\n" ); document.write( "---
\n" ); document.write( "start descent at:
\n" ); document.write( "03:06:40 PM
\n" ); document.write( "---
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