Question 785363
One of the very most common mixture exercise problems.  Just another example of the same general exercise.


L=9%
T=15%
H=19%
M=420 liters
u=UNKNOWN amount liters of the 9%
v=UNKNOWN amount of liters of 19%


SYSTEM OF EQUATIONS TO SOLVE:
{{{highlight((Lu+Hv)/M=T)}}} and {{{highlight(u+v=M)}}}
Solve for u and v.