A plan has a monthly base of $25 and a per-GB overage of $2. If you use 6 GB over the limit, what is the total charge?

• A. $25
• B. $22
• C. $49
• D. $37

Answer: (D)

This tests understanding how a plan charges a fixed monthly base plus overage when you exceed the limit. The base covers the standard included usage, and any usage beyond that incurs extra fees per unit.

Here, the monthly base is twenty-five dollars. For each extra gigabyte over the limit, you pay two dollars. If you’re six gigabytes over, the additional charge is six times two dollars, which is twelve dollars. Adding that to the base gives twenty-five dollars plus twelve dollars, totaling thirty-seven dollars.

So the total charge is thirty-seven dollars. This kind of pricing—base plus per-unit overage—is common in data plans and helps you see how overage drives the final bill.