Question

at a Christmas party 90% of the people wore a red dress, 2/25 of them wore a green dress and rest wore a white dress. if the number of p and rest wore white dresses. if the number of the people who wore white dresses is 15, how many people wore green dresses

Answer 1

Answer:

1

Step-by-step explanation:

Concept= Unitary distribution

Given= Dress% and white dress people

To Find= Number of people wearing green dress

Explanation=

Let the Number people attending the party be x.

out of x people 90% are wearing red dress.

So, 90% of x= 0.9x

Left=10%, x-0.9x= 0.1x

Out of these left 10% which is 0.1x

2/25 wear green dress= 2/25 of 0.1x= 2x/250

rest 23/25 wear white dress= 23/25 of 0.1x= 23x/250

We  have been given that people wearing white dress are 15.

So, 23x/250 = 15,

x= 163

Total people attending is 163

So people wearing green is 2x/250 = 2*163/250=1.304

Therefore 1 person is only wearing Green dress.

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Answer 2

Answer:

People wearing green are: 60

Step-by-step explanation:

As per the data given in the question,

We have,

People wearing red dress = 90%

People wearing green dress =2/5=$\frac{2}{25} \times 100 = 8\%$

So, People wearing white = 100-98 = 2%

Now, since people wearing white are 15.

So, by unitary method 1% = 7.5 people

So, People wearing green are: 60

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