Question 1035152
Let x be the number of grams of 35% solution the chemist needs.
Then the number of grams of 60% solution would be 3000-x.
The set up looks like this:
.35x + .60(3000-x) = .50(3000)
Now solve for x...
.35x + 1800 - .60x = 1500
-.25x = -300
x = 1200 grams of 35% solution