Respuesta :

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