Hello to all,(adsbygoogle = window.adsbygoogle || []).push({});

I'm solving one interesting problem that basically tailor to the problem in attachment.

I'm pretty much sure I'm on the right track, but my knowledge of math became little rusty since colledge, so I need to ask fo confirmation.

Please have a look and tell me if I wrote these equation correctly.

Thank you

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# Advanced math problem

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