a new building needs 140 windows the windows has already instaled 35 windows if every window take 4 hours to instaled then how long will it take for him to instal the remainig windows?
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420 hours more
As 1 take 4 hours
He already had 35
Remaining = 140 - 35 = 105
Therefore total time = 105 x 4
= 420 hours
As 1 take 4 hours
He already had 35
Remaining = 140 - 35 = 105
Therefore total time = 105 x 4
= 420 hours
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