Benjamin is a salesman working for commission at a shoe store. For the first $1,000 worth of sales in a given month, he earns a commission of 2%. For any sales he makes after the first $1,000 in that month, he earns a commission of 4%. What is the total dollar value of sales made by Benjamin in the month of March?This question is pretty simple, but the concepts it involves show up in harder DS questions, just a little more hidden. So, it's a good one to understand.
The passage provides the following information:
Commission = (0.02 × First 1000) + (0.04 × Sales - 1000)
or more simply
Commission = (20) + (0.04 × Sales - 1000)
So, if we know how much commission Ben earned, we can determine what his sales were.
(1) Benjamin earned a commission of $120 in March.120 = (20) + (0.04 × Sales - 1000)
We can see that, if we wanted to, we could use this information to calculate Sales.
Sufficient.
(2) Benjamin doubled the dollar value of his sales in March compared to his sales in February.This statement provides no specific values that can be used for calculating his sales.
Insufficient.
Correct answer: A