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algol [13]
3 years ago
6

An apartment building has the following distribution of apartments: 1 bedroom 2 bedroom 3 bedroom 1st floor 3 0 1 2nd floor 2 2

2 3rd floor 1 4 1If an apartment is selected at random, what is the probability that it is not on the 2nd floor or has 2 bedrooms?A) none of the given answerB) 1/9C) 14/16D) 1/3
Mathematics
1 answer:
Artyom0805 [142]3 years ago
7 0
1/3 because there are three floors.
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Cindy is selling circus tickets. On the first day she sells 6 adult tickets and 5 children tickets for total of 112.50. On the s
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Answer: Children tickets cost 7.50

Adult tickets cost 12.50

Step-by-step explanation:

Let a represent adult tickets

Let c represent child tickets

On the first day she sells 6 adult tickets and 5 children tickets for total of 112.50. This can be written as:

6a + 5c = 112.50 ...... equation i

On the second day she sells 8 adult tickets and 4 children tickets for the total 130. This can be written as:

8a + 4c = 130 ....... equation ii

6a + 5c = 112.50 ...... equation i

8a + 4c = 130 ....... equation ii

Multiply equation i by 4

Multiply equation ii by 5

24a + 20c = 450 ........ equation iii

40a + 20c = 650 ......... equation iv

Subtract iii from iv

16a = 200

a = 200/16

a = 12.50

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From equation ii,

8a + 4c = 130

8(12.50) + 4c = 130

100 + 4c = 130

4c = 130 - 100

4c = 30

c = 30/4

c = 7.50

Children tickets cost 7.50

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