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Alecsey [184]
3 years ago
7

A store is mixing peanuts, which cost $3.20 per pound, and raisins, which cost $2.10 per pound.

Mathematics
2 answers:
zzz [600]3 years ago
8 0

Answer:

The store mixes 8 pounds of peanuts and 9 pounds of raisins.

Step-by-step explanation:

Let the store mixes 'x' pounds of peanuts and 'y' pounds of raisins.

The cost of peanut per pound is $3.20 and cost of raisins per pound $2.10

According to question,

Total weight of mixture given is 17 pounds.

\Rightarrow x+y=17         ................(1)

also total cost of mixture given is $44.50

\Rightarrow 3.20x+2.10y=44.50       ...........(2)

Solving for equation (1) and (2),

Multiply equation (1) by 3.20 , we get

(1)⇒ 3.20x+3.20y=54.40    ............(3)

Now, subtract equation (3) from equation (2) , we get

3.20x+2.10y-(3.20x+3.20y)=44.50-54.40

\Rightarrow 3.20x+2.10y-3.20x-3.20y=-9.90

\Rightarrow 2.10y-3.20y=-9.90

\Rightarrow -1.1y=-9.90

\Rightarrow y=9

Thus, The store mixes 9 pounds of raisins.

Put, y = 9 in (1),

\Rightarrow x+y=17 \Rightarrow x+9=17 \Rightarrow x=8

Thus, The store mixes 8 pounds of peanuts.


7nadin3 [17]3 years ago
3 0

Answer: 8 lb of peanuts and 9 lb of raisins

Step-by-step explanation:

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