### Question #10

Friday, November 27, 2009
Hello 9-05! Abby here with question number 10! Okay so let's get started!

A carpenter has 64 m of baseboard. He installs 1/2 of the baseboard in one room. He installs another 3/5 of the original amount of the baseboard in another room. How much baseboard does he have left?

So first, we have to multiply 64 by 1/2 because we want to find out how much of the baseboa
rd the carpenter used in the first room. Here's how it goes:

The carpenter used 32 m of the baseboard for the first room.

Because the question says he used another 3/5 of the original amount (64), we just have to multiply 64 by 3/5 to find out how much of the baseboard the carpenter used in the other room using the original amount.

For this equation, I used a calculator to convert 38 and 2/5 to 38.4. So the carpenter used 38.4 m of the baseboard in the other room.

Now, we have to add the amount of baseboard the carpenter used in the first room (32) and the amount of baseboard the carpenter used in the other room (38.4). We have to do this because this will be a part of finding what the carpenter has left.

Then, we have to get the original amount of the baseboard (64) and subtract the amount of baseboard that was combined from the two rooms the carpenter used (70.4). This will help us find what the carpenter has left.

The answer is -6.4 m! Since the answer is negative, it means the carpenter needs or is short on baseboard.

So the word problem sentence would be..

The carpenter needs 6.4 m of baseboard.
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Well, that's my blog post for question number 10! If there are any errors, and if you don't understand something, please feel free to comment! I will try my best to change my post to make you guys understand it better! Anyways, have a great weekend 9-05! (:

MikeMcilveen said...

Hi, Abby.
You explained really well, and that's top-notch in the style department. I agree with your calculations too for 1/2 and 3/5.
Only one question: It looks to me like the carpenter would run out of wood if she used 32+38.4m > 64m original amount? Of course I have been wrong before...but not this time! (I hope.)

Mr. B. said...

Abby, agree with Mr. Mike above. 1/2 + 3/5 = ? Less or more than one? Check your work kiddo.

linda 9-05 said...

Hi Abby! You did some really great explaining. But right up until you did subtracting. If I had this question, what I would do was find out what was half of the entire board, find 3/5 of the board, add those two together and subtract the sum from the entire baseboard to figure out what was left. I don't understand why you subtracted the two from each other. Can you explain why?

Abby905 said...

Thank you guys for commenting! It really helped me with making my blog post better! ;D

Mr. B. said...

Thanks for the fix Abby