Question

Snookers lumber can convert logs into lumber or plywood. In a given day, the mill turns out twice as many units of plywood as lumber. It makes a profit of 20 on a unit of lumber, and 40 on a unit of plywood. How many of each unit must be produced or sold in order to make a profit of 10,100?

Answer 1

plywood:lumber::2:1
that means for each piece of lumber (for which there are two pieces of plywood) you get 20 from the lumber (and 40*2=80 from the two plywoods), or a total of 100 for each lumber+2plywoods. 10,100/100=101pieces of lumber, which is 202 pieces of plywood