SOLUTION: The nutty shoppe has 10kg of mixed pecans and cashews which sell for $8.40 per kilogram. Cashews alone sell for $8.00 per kilogram, and pecans sell for $9.00 per kilogram. How many

If you need immediate math help from PAID TUTORS right now, click here. (paid link)
Click here to see ALL problems on Polynomials-and-rational-expressions

Question 596032: The nutty shoppe has 10kg of mixed pecans and cashews which sell for $8.40 per kilogram. Cashews alone sell for $8.00 per kilogram, and pecans sell for $9.00 per kilogram. How many kilograms of pecans are there in the mix?
Answer by josmiceli(9681) (Show Source):
You can put this solution on YOUR website!
Let = kg of pecans
Let = kg of cashews
Cost of pecans used =
Cost of cashews used =
Cost of mixture =
---------------------------
(1)
(2)
-----------------
Multiply both sides of (2) by
and subtract (2) from (1)
(1)
(2)

and, since
(2)
(2)
(2)
-------------
There are 4 kg of pecans in the mixture
check answer:
(1)
(1)
(1)
(1)
OK