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s2008m [1.1K]
3 years ago
13

The average age of the 8 people in room A is 25. The average age of the 12 people in room B is 50. If the people in the 2 rooms

are put together in one room, what would be the average age of the 20 people? Explaination please!
A) 32
B) 34
C)36
D) 38
E) 40
Mathematics
1 answer:
eduard3 years ago
7 0
The average would be the total amount divided by the 2 groups, so the answer would be 37.5 years old.
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Natasha was thinking of a number. Natasha doubles it and gets an answer of 93. What was the original number?
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Answer:

46.5

Step-by-step explanation:

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Answer:

x = 0

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Step-by-step explanation:

3x + 9y = 18 ---------eqn 1

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Substitute eqn 2 into eqn 1, for the value of y

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Hint: to confirm the values

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Let's take eqn 1 ,

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Correct

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y = 0 + 2

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Answer:

Step-by-step explanation:

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