Question

you can sand 4/9 square yard of wood in 1/2 hour. how many square yards can you sand in 3.2 hours

Answer 1

Answer:

$4 \div 9 = 1 \div 2x \\ then 3.2x = what \\ from \: equation \: 1st - \: 4 \times 2 = 9x \\ x = 8 \div 9 \\ 3.2x = 3.2 \times 8 \div 9 = 2.84 \: square \: sands$