You should know this if you rated yourself as college level...
"Jack can wrap 28 boxes in 2 hours"
<span>Jack wraps 28 boxes/(2 hours) = 14 boxes/hour </span>
<span>"Walter takes 3 hours to wrap 36 boxes" </span>
<span>Walter wraps 36 boxes/(3 hours) = 12 boxes/hour </span>
<span>Together they wrap 14+12 = 26 boxes per hour. </span>
<span>t hours × 26 boxes/hour = 65 boxes </span>
0.2 = 1/5 = 20%
0.04 = 1/25 = 4%
0.65 = 13/20 = 65%
1 = 1/1 = 100%
0.25 = 1/4 = 25%
1.5 = 3/2 = 150%
0.8 = 4/5 = 80%
0.26 = 13/50 = 26%
0.01 = 1/100 = 1%
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