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- Thread starter r-soy
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Precalculus Mathematics Homework Help News on Phys.org

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Hi all

I try to solve and i want checkmy answer

I don't think your answers make any sense at all.

For #13 you state 79.23. Well, 79.23 months? days? years? seconds? Doing the calculation myself tells me that you've done something wrong here.

For #14 you say 43 years?? If he saves 32Rs/year for 43 years he would save well over 200Rs and that's not accounting for the +4 Rs/year.

- #4

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Help me what wil i do ?

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For example, if you want to find the number of years it takes to save 200Rs given all the information in the problem, you could setup something like:

[tex]

32 + (32 + 4) + (32 + 4 + 4) + ... + (32 + 4N) = \sum_{n=0}^N (32 + 4n) = 200

[/tex]

and solve for N.

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