Question

The number of bricks laid varies directly with the amount of time spent. If 40 bricks are laid in an hour and 15 minutes, how much time would it take to lay 500 bricks?

Answer 1

First, let's convert the 1 hour 15 mins to mins

I hour 15 mins = 60 + 15 = 75 minutes

let x be the time taken to lay 500 bricks

40 bricks = 75 minutes

500 bricks = x

cross-multiply

40x = 500(75)

40x = 37500

divide both-side by 40

x = 937.5 minutes

we will now change bac to hour and minute

x = 937.5 minutes = 15 hours 37.5 minutes