Quandaries
and Queries 

Compute the cost of ready mixed concrete for a driveway 70ft long, 10ft wide, 3 inches deep at a cost of $30.00 per cubic yard 

Hi Cathy, Since the cost of the concrete is per cubic yard I would change all the units to yards first. Ther are 3 feet in a yard and 12 inches in a foot so
Thus the driveway requires ^{70}/_{3} ^{10}/_{3} ^{1}/_{12} cubic yards. Each cubic yard costs $30.00 so the cost for the concrete is
Penny 

