Question 351489
pecans sell for $1.55 per pound  ------ 15 lbs
walnuts sell for $1.95 per pound. ----- x lbs
mixture  sells for 1.75 per pound 15+x lbs

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15*1.55 +x*1.95 = 1.75(15+x)
23.25+1.95x=26.25+1.75x
0.2x=3
x=3/0.2
x=15 pounds of walnuts

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