This one problem is from Sarnia. In the hope that she will give an OA soon, I post this question here to see what other people think. I think it is a good question.
Some accountants calculate with simple adding machines, and some use complex computers. One can perform more calculations in less time with a computer than with an adding machine. Therefore assuming the cost of using the two types of machines are equal, an accountant who uses a computer generally can earn more per hour than an accountant who uses an adding machine
Which one of the following is an assumption that would make the conclusion in the passage a logical one?
1) The more calculations an accountant perform, the more money he or she will earn
2) In general, accountants vary in terms of the number of calculations they make and the amount of money they earn