Question

The mean of 10 numbers is 20. if 5 is subtracted from each number, Then new mean is equal to??

solve it with steps.

Answer 1

hey amrit.... here is the answer

answer ==> 15

explanation ---> given that the mean of 10 no. is 20.

now,

so, the sum of 10 no. is = 10×20 = 200

and,

if 5 is subtracted from every no. than sum becomes 200-(10×5) = 150

now ,

new mean = 150/10 = 15
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hope it helps

☺☺ himanshu jha ☺☺

Answer 2

the new mean is 15
200 is the sum of 10 no
if 5 is subtracted from each then 50 will be subtracted from the sum
so 150 is the new sum
150/10=15