SOLUTION: The arithmetic mean (or average) of A, B and C is 10. The value of A is six less than the value of B, and the value of C is three more than the value of B. What is the value of C?
Algebra.Com
Question 215969: The arithmetic mean (or average) of A, B and C is 10. The value of A is six less than the value of B, and the value of C is three more than the value of B. What is the value of C?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
((b-6)+b+(b+3))/3=10
(3b-3)/3=10
3b-3=30
3b=33
b=11
a=5
c=14
RELATED QUESTIONS
The average (arithmetic mean) of a and b is 10, whereas the average of b and 10 is c/2.... (answered by Theo)
The arithmetic mean and standard deviation of a certain normal distribution are 13.5 and... (answered by Edwin McCravy)
In the arithmetic sequence 17, a, b, c, 41, what is the value of... (answered by checkley77)
The arithmetic mean and median of five numbers a, a, b, c, c are 40 and 50 respectivly.... (answered by KMST)
If (a-b) is 6 more than (c+d) and (a+b) is 3 less than (c-d), then the value of (a-c)... (answered by tommyt3rd)
the sequence 24, a, b, c, 60 is arithmetic. What is the value of a+b+c? (answered by John10)
The sum of the numbers A and B is 116. A is 3 less than C but 4 more than B. Find the... (answered by josgarithmetic,lwsshak3)
The five numbers are ordered from least to greatest 3< 7< 9< 14< x. If the average... (answered by richwmiller)
Which statement about the function ƒ(x) = 1/2x is always true?
A. The value of y is... (answered by MathLover1)