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kvasek [131]
3 years ago
14

You are inviting 30 friends to a party. You know that each person eats, on average,

Mathematics
1 answer:
nika2105 [10]3 years ago
8 0

Answer:

11.25 pizzas

Step-by-step explanation:

We are given that:

There are 30 friends total

Each eat 3 slices

1 pizza has 8 slices

So, with the given information, you can know that

Number of slices pizza that all 30 friends eat = 30*3 = 90 slices

Each pizza have 8 slices so we need 90 slices so we need in total of:

Number of pizzas need = 90/8 = 11.25 pizzas

Hope this help you :3

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A knife is three times the cost of a spoon. 9 spoons and 12 knifes cost ?82.80 workout the cost of 1 knife.
tankabanditka [31]

Let S = spoon

Let K = knife


1 knife is thee times the cost of a spoon, so it would be 3S

Now you have 9S + 12K = 82.80

We can replace the K with 3S:

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