Question 826001
L = 4%
T = 5%, target value
H = 25%
U = 50 kilograms
v = unknown, how much kilograms of the 25% fat to add to obtain T.


This is similar to a two part mixture problem but here, one material quantity is known and the other is unknown.  You might want to look at and review the Two-Part Mixture lesson in my profile.


For your exercise the way the numbers have been generalized,
{{{highlight((LU+Hv)/(v+U)=T)}}}
Solve for v.