## Elementary Technical Mathematics

2 ft 3$in^{2}$ of sand = 24 $in^{2}$ + 3 $in^{2}$ = 27 $in^{2}$ 6 ft 3in of topsoil 72$in^{2}$ + 3$in^{2}$ = 75$in^{2}$ sand: topsoil 27:75 Simplify 9:25