Question

the mean of 10 numbers is 20. if 5 is subtracted from every number what will be the new mean​

Answer 1

Step-by-step explanation:

consider the 10 numbers as a, b, c, d, e, f, g, h, I, j

mean=a+b+c+d+e+f+g+h+i+j/10=20

a+b+c+d+e+f+g+h+i+j=200

a-5+b-5+c-5+d-5+e-5+f-5+g-5+h-5+i-5+j-5=

a+b+c+d+e+f+g+h+i+j-10(5)=200-50=150

new mean=a+b+c+d+e+f+g+h+i+j-10(5)/10=150/10=15

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Answer 2

Answer:

the answer is 15

Step-by-step explanation:

IF SUPPOSE WE TAKE 20 TEN TIMES THEN WE GET OUR MEAN AS 20 (BY TABLE OF 20)

IF WE SUBTRACT 5 FROM EVERY NUMBER WE GET OUR MEAN AS 15 (150 IS THE TOTAL AND BY DIVIDING IT BY 10 WE GET 15 AS OUR MEAN )

20-15 (10 TIMES)

150 /10

15 AS ANSWER

I THINK YOU WOULD UNDERSTAND THE EXPLANATION .

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