Question

the mean of 75 number is 35.if each number is multiplied by 4,find the new mean​

Answer 1

Answer:

140

Step-by-step explanation:

let tye sum of numbers be S then

S/75= 35.....eq 1

now each number is multiplied by 4 so 4 cand be taken out as common

so new sum = 4S ...eq 2

From eq 1..... S= 35×75

using eq2 .........new sum= 4×75×35

therefore mean = 4×35×75/75

ans = 140