Question 535441
Quantity: x + y = 30 
Value:   55x + 70y = 61*30
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Multiply thru Quantity by 55 to get:
55x  +  55y  = 55*30
55x  +  70y  = 61*30
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Subtract and solve for "y":
15y = 6*30
y = 12 lbs. (amt of 55 cent walnuts needed)
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Solve for "x":
x + y = 30
y = 18 lbs. (amt of 70 cent almonds needed)
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Cheers,
Stan H.
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