+831 Jack has 1,200 acres of land on his farm. He can plant wheat at a rate of 10(2/3)acres per hour. How many hours total will it take him to plant all 1,200 acres of land with wheat?
145(1/3) hours
112(1/2) hours
120 hours
180 hours
+129852 Here's where we might be able to use some reasoning instead of working out a full problem. Let's suppuse that he could plant 10 acres in an hour. Then it would take him 120 hours. But he can plant more than that in an hour, so it must take him less than 120 hours to do the job........which answer would that be??
+129852 Here's where we might be able to use some reasoning instead of working out a full problem. Let's suppuse that he could plant 10 acres in an hour. Then it would take him 120 hours. But he can plant more than that in an hour, so it must take him less than 120 hours to do the job........which answer would that be??
