if 12 men can reap 120 acres of land in 36 days , how many acres of land can 54 men reap in 54 days ?
"12 men 120 acres 36 days 54 men ? 54 days 120 * 54 / 12 * 54 / 36 10 * 54 * 3 / 2 54 * 15 = 810 answer : c"
multiply(120, multiply(divide(54, 12), divide(54, 36)))