Poll of the Day

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Anyone know the answer to these question? (weird questions, probably about math)
davf135 | Posted on Sept. 26, 2011, 6:27 p.m.
If a customer's bill is $45.00 for the first month their subscription starts and $30.00 each month after that, which date did their service most likely start?


The 1st of the month

The 10th of the month

The 15th of the month

The 20th of the month


A customer calls and has questions about the bill for their first month's subscription. They want to know why the monthly rate is $45.00, but the bill is for $60.00. What is the most likely reason for the bill being this amount?


The customer owes a late fee in addition to the subscription amount.

There was a mistake and the customer was over-charged.

The subscription began about 10 days before the 15th of the month.

The customer's account was upgraded to the next subscription level.


I don't see how any reasoning fro the question can lead to those answers.
davf135 | Posted on Sept. 26, 2011, 7:35 p.m.
Bump

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Clench281 | Posted on Sept. 26, 2011, 7:42 p.m.
I'd guess the 1st of the month, and, The subscription began about 10 days before the 15th of the month

I feel a missing part of these questions is that payment is due on the 15th of the month. If we assume that, we know 15 extra bucks ($45 instead of $30) is half of the subscription fee, so the customer started a half month before the pay due date. For the second one, 60 dollars is $15 above the monthly fee, 15/45 is one third. Ten days is a third of a pay period, thus "10 days before 15th of the month."

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davf135 | Posted on Sept. 26, 2011, 7:51 p.m.

From: Clench281 | #003
I'd guess the 1st of the month, and, The subscription began about 10 days before the 15th of the month

I feel a missing part of these questions is that payment is due on the 15th of the month. If we assume that, we know 15 extra bucks ($45 instead of $30) is half of the subscription fee, so the customer started a half month before the pay due date. For the second one, 60 dollars is $15 above the monthly fee, 15/45 is one third. Ten days is a third of a pay period, thus "10 days before 15th of the month."


That makes a lot of sense. If I had actually thought about it instead of pushing it aside I might have come to the same conclusion.

The person that asked me those questions says she doesn't remember if the due date was given ( they were questions in a job application she said)