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Question
jamil always throws loose change into a pencil holder on his desk and takes it out every two weeks  this time it is all in nickels and dimes  there are 2 times as many dimes as nickles and the value of the dimes is 1.65 more than the value of the nickles how many nickles and dimes does jamil have

Answer
"the change is all in nickels and dimes."  
n and d are the numbers of nickels and dimes, respectively.

"there are 2 times as many dimes as nickels"
d = 2n

"the value of the dimes is 1.65 more than the value of the nickels"
0.10d = 1.65 + 0.05n

substitution
0.10(2n) = 1.65 + 0.05n
0.20n = 1.65 + 0.05n
0.15n = 1.65
n = 11

d = 2n = 22

There are 11 nickels and 22 dimes.

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Janet Yang

Expertise

Word problems are my favorite type of math questions! I would not feel comfortable answering questions that require specialized knowledge (Physics, Statistics, etc.) because I have not studied these in depth.

Experience

I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

Publications
Co-author of An Outline of Scientific Writing: For Researchers With English as a Foreign Language.

Education/Credentials
I have a Bachelor's degree in Applied Mathematics from the University of California at Berkeley, and a Master of Business Administration degree from The Wharton School.

Past/Present Clients
George White Elementary School. Homework Help program at the Ridgewood Public Library, Ridgewood, NJ. Individual students.

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