Question 325085
A $31.50 box of nuts contains almonds mixed with pecans. Almonds cost $7.50/kg and pecans cost $9.00/kg. The number of kilograms of almonds is 3 times the number of kilograms of pecans. Find the number of kilograms of each kind of nut in the mixture.
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A = 3*P
7.5A + 9P = 31.5
Can you go from there?