SOLUTION: A potting mixture contains 12.0% peat moss and 6.00% vermiculite. How much peat and how much vermiculite must be added to 900 kg of this mixture to produce a new mixture having 15.

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A potting mixture contains 12.0% peat moss and 6.00% vermiculite. How much peat and how much vermiculite must be added to 900 kg of this mixture to produce a new mixture having 15.      Log On


   

Question 1069193: A potting mixture contains 12.0% peat moss and 6.00% vermiculite. How much peat and how much vermiculite must be added to 900 kg of this mixture to produce a new mixture having 15.0% peat and 15.0% vermiculite?
Do not round intermediate results. Round only final answers. Round to two decimal places.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
p, how much peat moss to add
v, how much vermiculite to add

PEAT MOSS - WANT 15%
%28p%2B0.12%2A900%29%2F%28p%2Bv%2B900%29=0.15


VERMICULITE - WANT 15%
%28v%2B0.06%2A900%29%2F%28p%2Bv%2B900%29=0.15


Those are the basic equations according to the description. Simplify each and then solve the system for p and v.