Help Me Please

Manuel.... I made a typo on this question earlier....see my corrected answer here...

https://web2.0calc.com/questions/help-please_26975#r1

[ I verified my result with WolramAlpha...]

I guess the answer could be this:

10√15 - 2√15

Am I correct?

See WolframAlpha's various solutions here:

http://www.wolframalpha.com/input/?i=4%E2%88%9A15+-+10%E2%88%9A3%2F5%C2%A0%2B+3%E2%88%9A60

I don't believe yours is correct.... it would simplify to :  8√15

Thank You Cphill

I believe I have settled this one. The issue is interpretation-based. 

Cphill's interpretation: $4\sqrt{15}-\textcolor{red}{\frac{10\sqrt{3}}{5}}+3\sqrt{60}$

ManuelBautista2019: $4\sqrt{15}-\textcolor{red}{10\sqrt{\frac{3}{5}}}+3\sqrt{60}$

According to my individual calculation, both of you got the correct answer, assuming your interpretation.