SOLUTION: i have no idea how to solve this problem. please help. the question is, Emma writes 10 papers and an additional 5 papers if she writes 2 hours more. What is the number of paper

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Question 897669: i have no idea how to solve this problem. please help.
the question is,
Emma writes 10 papers and an additional 5 papers if she writes 2 hours more. What is the number of papers she writes in 3 hours?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
10 papers in t time, hours.
10+5 papers in t+2 hours.

IF IF IF we can assume Emma writes to produce papers at a uniform rate, the the rate for the 10 papers is the same as the rate for the 10+5 papers.

10%2Ft=%2810%2B5%29%2F%28t%2B2%29, set as a simple uniform rates problem, equation. You might be more interested in a linear equation situation, but I see this more easily (just me, right now) as a uniform rates situation.

Solve for t. You can then use it to find the paper-writing rate at which Emma works. Use the found rate to find how many papers she writes in 3 hours.


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t=4 hours, 5%2F2 papers per hour is her rate.
If time were 3 hours, then %285%2F2%29%2A3=7%261%2F2 papers.