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The mean and median of the data a, b and...

The mean and median of the data a, b and c are 50 and 35 , where `a lt b lt c` . If `c - a = 55` , then find (b - a) .

A

8

B

7

C

3

D

5

Text Solution

Verified by Experts

The correct Answer is:
D
(i) Since a , b , c are in ascending order , b is the median .
(ii) AM = `("Sum of all observations")/("Total number of observations")`.
(iii) Using the above relation , write the relation between c and a , and find the value of a and c .
Finally , find the values of b and a .
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