Let X be the time taken to cut all the 5 sq ft
3/4 sq ft = 1hour
5 sq ft = X
cross-multiply
3/4 X = 5
Multiply both-side of the equation by 4/3
X= 5 x 4/3
X = 20/3
X=6.667 hours
X= 6 hours 40 minutes
It will take Sam 6hours40 minute to cut it all
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