Building a wall

Your task is to construct a spreadsheet model to help you create a cost estimate to build a wall. You are offered two options: cement or bricks. Both kinds of walls will be built by crews of two. Crews will work three eight-hour days to build either type of wall. The wall will be 20 meters long, 6 meters tall, and 2 meters thick. Wages will be $10 per hour per person. You will have to add 20% to wages to cover fringe benefits. Cement will cost $30 per cubic meter. Brick will cost $20 per cubic meter.