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All right. So let's get ready for the challenge.

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This is a pretty simple challenge that's based on one of the problems that we solved in this section.

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If you recall, we had a problem for Frank's Carpet Cleaning Service,

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where Frank charged so much per room.

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Well, this is a little bit different. In this case, Frank has two charges.

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One for small rooms and one for large rooms.

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So as you can see here he charges $25 for small rooms

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and $35 for large rooms.

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The sales tax rate is still 6% and estimates are still valid for 30 days.

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So what you need to do here is prompt the user

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both for how many small rooms they want cleaned and how many large rooms they want cleaned

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and then provide an estimate that looks something like this.

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Number of small rooms, for example, 3, number of large rooms 1.

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Price per small room $25, price per large room $35.

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Calculate the cost. Calculate the tax and then come up with a total estimate

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and tell them that the estimate is valid for 30 days.

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Okay. So hopefully that makes a lot of sense. And here's a sample run

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that you can see.

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So here, hello welcome to Frank's Carpet Cleaning Service. How many small rooms would you like clean?

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Let's say I want 3 small rooms cleaned and 1 large room clean.

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And you can see here the estimate is number of small rooms 3,

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number of large rooms 1- that's what I just typed in -

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the price per small rooms is $25,

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the price per large room is $35 and the cost is $110.

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if you do the math, you can see that 3 x 25 is 75

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plus 35 is 110. 6% of that is $6.60.

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If you add it all together you get a $116.60.

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And then you display, "This estimate is valid for 30 days".

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All right. So give it a shot, take your time. I'm sure you'll do it just fine.

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If you want to see the solution, in the next video, I'll present my solution to this problem.