60. 40 percent of 150 yogurts comes to a sum of 60
X^2-6x+7=0
-b +/- sqrt b^2-4ac all over 2a
a=1 b= -6 and c=7
6+/- sqrt 36-4×1×7 all over 2×1
6+/- sqrt 8 all over 2
6+/- 2sqrt2 all over 2
reduce
3+/- sqrrt2
For this, all you'll wanna do is add the answer to this problem to your original number...
16× .75 = 12
now add...
16 + 12 = 28$ per pound...
to make a 75% profit on the markets investment....I think I'll have a salad instead at that price...
6 3/4 would be your answer
