The mean of the Three numbers is 25. The mean of other four humber is 48. Find the mean of all the numbers
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Answer:
The Correct Answer is: 38.142
Step-by-step explanation:
Given that mean of three numbers is 25
(x1 + x2 + x3)/3 = 25
x1 + x2 + x3 = 75 --- (i)
The mean of other four number is 48
( x4 + x5 + x6 + x7 )/4 = 48
x4 + x5 + x6 + x7 = 192 --- (ii)
The Mean of all the numbers is,
(x1 + x2 + x3 + x4 + x5 + x6 + x7) / 7
By using the above equations,
(75 + 192)/7
= 267/7
= 38.142
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