Question 147690
A grocer mixed peanuts(whose price is 90 cents per kilogram)with almonds(whose price is $1.10 per kilogram)to make a 20-kilogram mixture of nuts for sale at 98 cents per kilogram. How many kilograms of peanuts and how many kilograms of almonds are in the mixture?
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EQUATIONS:
Quantity: p + a = 20
Value: 90p + 110a = 98*20
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Rearrange:
9p + 11a = 196
9p +  9a = 180
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2a = 16
a = 8 (# of pounds of almonds in the mixture)
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p + 8 = 20
p = 12 (# of pounds of peanuts in the mixture)
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Cheers,
Stan H.