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Goshia [24]
2 years ago
14

Someone helppp please??

Mathematics
1 answer:
Radda [10]2 years ago
3 0

Answer:

5.52

Hope this helped!

Step-by-step explanation:

Let c = cost of a spoon  

3c = cost of knife  

9c + 12(3c) = 82.80  

9c + 36c = 82.80  

c = 82.80/45  

= 1.84  

cost of 1 knife = 1.84 x 3  

= $5.52 check  

9*1.84 + 12*5.52 = 82.80

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