Question

10.The mean of 8 items is 35.1,then the sum of these items will be:

a)280.8 b)288.0 c)275.1 d)35.1​

Answer 1

Answer:

Step-by-step explanation:

We know that Mean-Sum of terms/ number of terms

As given

Mean=40 and number of terms=8 so

40 Sum of terms/8

Sum of terms=40*8-320 now by increasing each term by 5 sum of terms will increase by 8*5=40 so new Sum will be

Sum of terms=320+40=360

Again solving to find mean

Mean-Sum of terms/number of terms Mean=360/8=45

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