Yesterday I had to put some motor oil in the car.
As I was pouring the oil from the bottle into the engine, I started thinking about how the price of crude oil has dropped so dramatically in the past 12 months. As I watched the flow of oil from the bottle dwindle from a stream, to a dribble, to a drip, drip, drip, I began wondering about the cost of each little teardrop of oil.
That thought took me back to grade school math problems:
Timmy has 32 drops of motor oil. Martha has twice as many drops as Sam, but only 3/5 as many as Timmy. If the price of crude oil dropped to $55 a barrel, what is the cost of all of Martha’s drops of oil?
Answers via comments below.