Solving a system of eqautions from word problem

A hiker plans to carry only two types of high energy foodseanuts and and raisins. each gram of peanuts provides 6 calories and 0.2 grams of protein. Each gram of raisins provides 3.0 calories and 0.04 grams of protein.
How many grams of peanuts and how many grams of raisins wiull provide 642 calories and 12.4 grams of protein?

thanks in advance !!!!!

I'll get you started.

P = Desired number of grams of peanuts
R = Desired number of grams of raisins

There, that's half the battle. Let's see what you get.

RBGTHGANH

" Solving a system of eqautions from word problem "

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