Q18 of 79 Page 25

The mean weight of 8 numbers is 15. If each number is multiplied by 2, what will be the new mean?

We have,

The mean weight of 8 numbers is 15


Then, the sum of 8 numbers = 8 * 15


= 120


If each number is multiplied by 2


Then, New mean = 120 * 2


= 240


Therefore, new mean =


= 30


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