Mr. Hopkins is building a sandbox for his children. It would cost $228 for the sand if he builds a sandbox with dimensions 9 ft by 6 ft. If Mr. Hopkins decides to increase the size to 13 1/2 ft by 8 ft but keep the same depth of sand, how much would the sand cost?
A sand box with dimenstion 9' by 6' contains 54 square feet.
If it costs $228.00 to fill this sandbox, it will cost $228.00 / 54 square feet = $4.22 per square foot.
A sandbox with dimensiotns 13½' by 8' will contain 108 square feet.
At $4.22 per square foot, it will cost 108 x $4.22 = $455.76 (or $456, if you use the cost per square foot
to be $4.222222222).