Posted by **Jolley** on Tuesday, November 28, 2006 at 8:25pm.

Use the Systematic Trial to solve this problem.

Peanut-Pecan Problem

Peanuts sell at $5/kg and pecans sell at $20/kg. Marika wants to make 30kg of a mixture of peanuts and pecans that will s ell at $10/kg/ How many kilograms of peanuts and pecans should she use?

Help plz. Plz explain how you got the answer.

Let x = kg peanuts

y = kg pecans

===================

equation 1. x + y = 30

equation 2. $5x + $20y =$10*30

===============================

Solve the two equations for x and y. Post your work if you get stuck and need further assistance.

I don't get it why did you need help for that easy pesey problem?

evryone is at different stages, what is easy for you is new to others

- Math Help plz!!! Really need help. -
**Shylisa**, Thursday, December 11, 2008 at 7:05pm
->Let x repersent the mass of peanuts

->Mass of pecans:30-x

->The Value of peauts:5x

->Value of pecans:20(30-x)

Equation: 5x + 20 (30-x)= 10(30)

*Please note a number before the bracket means tp multiply*

5x + 600 x - 20 = 300

->move + 600 to the other side of the equal sign, it becomes a negative - 600.

-> x-20 just make it a 20x

5x - 20x = 300 - 600

-15x = -300

->So negative 15 equals negative 300

->Next divide -15x by -15 and -300 by -15

-15x = -300

----- -----

-15 -15

x = 20 Kg (the mass of peanuts)

-> Mass of pecans: 30 - x whitch is 30 - 20 = 10kg

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