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3 years ago

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The mean of 15 numbers is y.If each of the number is increased by 30, find the increase of the new mean in terms of y.The answer

i found is 30 but it isn't in terms of y. is the question wrong

1 answer:

dusya [7]3 years ago

4 0

Answer:

y+30

Step-by-step explanation:

the sum of the numbers is 15y

the new sum after increase each number by 30 is 15y+450

the new mean 15y+450/15

= y+30

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