SOLUTION: in a set 50 numbers, if the average of the first 25 numbers is 16, next 10 numbers is 15 and the rest is 20, then what is the average of the entire set?

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Question 845400: in a set 50 numbers, if the average of the first 25 numbers is 16, next 10 numbers is 15 and the rest is 20, then what is the average of the entire set?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Average is the sum of the values divided by the number of values.
Find each sum.
A1=S1%2F25=16
S1=400
A2=S2%2F10=15
S2=150
A3=S3%2F%2850-10-25%29=S3%2F15=20
S3=300
A=%28400%2B150%2B300%29%2F50
A=850%2F50
highlight%28A=17%29