Question 134246
Let x=amount of 3% yogurt needed

Then 60-x=amount of no-fat yogurt needed

Now we know that the amount of fat in the 3% yogurt (0.03x) plus the amount of fat in the no-fat yogurt(0) has to equal the amount of fat in the final mixture
(0.01*60).  So our equation to solve is:

0.03x=0.01*60 or
0.03x=0.6 divide both sides by 0.03

x=20 lb --------------amount of 3% yogurt needed

60-x=60-20=40 lb ----amount of no-fat yogurt needed
Ck

0.03*20=0.01*60
0.6=0.6

Hope this helps---ptaylor