Mixing two solutions to find overall solution

If you mix 20ml of 3m sugar solution with 30ml of a 5M sugar solution, what solution do you end up with?

I did; volume = number of moles/concerntration - 3/.02 = 150 - 5/.03 = 166.6666667 - 150+166.6666667 = 316.6666667 - wrong answer. Any formulas which could help would be appreciated.

• geeze... $$(20*3) + (30*5) = 50*X$$ – MaxW Dec 6 '15 at 23:01