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Lesechka [4]
2 years ago
12

A group of people went to a restaurant.

Mathematics
1 answer:
mezya [45]2 years ago
8 0

Answer:

The fraction of the people who choose curry = \frac{13}{4}

Step-by-step explanation:

As given,

Starter              Main course

Soup                    Lasagna

Prawns                 Curry

The number of people who choose soup: the number of people who choose prawns = 2 : 3

Of those who chose soup,

The number of people who choose Lasagna : the number of people who chose curry = 5 : 3

Of those who chose prawns,

The number of people who chose Lasagna : the number of people who chose curry = 1 : 5

Let total number of people goes to restaurant = 5x

People who choose soup = \frac{2}{5}×5x = 2x

People who choose prawns = \frac{3}{5}×5x = 3x

Now, given,

Of those who choose soup,

The number of people who choose Lasagna : the number of people who chose curry = 5 : 3

So,

People who choose Lasagna after choosing soup = \frac{5}{8}×2x = \frac{5}{4}x

People who choose Curry after choosing soup = \frac{3}{8}×2x = \frac{3}{4}x

Also, given,

Of those who chose prawns,

The number of people who chose Lasagna : the number of people who chose curry = 1 : 5

So,

People who choose Lasagna after choosing prawns = \frac{1}{6}×3x = \frac{1}{2}x

People who choose Curry after choosing prawns = \frac{5}{6}×3x = \frac{5}{2}x

So,

Total number of people who choose curry = \frac{3}{4}x + \frac{5}{2}x = x ( \frac{3}{4}  + \frac{5}{2} ) = x (\frac{3 + 10}{4} ) = x ( \frac{13}{4} ) =  \frac{13}{4}x

So ,

The fraction of the people who choose curry = \frac{Total number of people who choose curry}{Total number of people who go to restaurant} = \frac{\frac{13}{4} x}{x} = \frac{13}{4}

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Given:

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Step-by-step explanation:

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