Query about question "A tutor charges the following rates..." [327]

GRE GRE Quant Problem Solving
1

https://www.gregmat.com/problems/quant?problem=a-tutor-charges-the-following

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Hey Team,
I think the answer is wrong here, because the scales miss the following points increase:

400 - 401: ?
500 - 401: ?
600 - 601: ?
700 - 701: ?

In this case the answer should be $15860.
Can you please help clarify this?

2

Hi @user12208

This point is accounted for as part of the $20.

Again, this is covered as part of the $30 price per point.

The rest of course follows.

Question asked for an approximate value, so this should still get you to the correct answer