Drilling for Oil

During Science class, we did an experiment where we had to drill for oil. First, we had to trace 3 different maps, and pick 4-5 different areas to drill around. Then we were given a sheet of paper, where we had to plot the spots where to dig in a box, and record our findings. Also we were given an amount of money we could spend. We were given a total of 2.5 million dollars to spend. We were given 5 trials to find 3 reservoirs of oil. On our first trail, we found oil. On our second, we stuck oil again. On our third trial, we didn't strike oil. On the fourth trial we got oil, and that was the final oil reservoir we had to find. After all the math we did, we came out to make around $51m.