Answer:


Step-by-step explanation:
Given
--- coefficient of variation


Required
The mean and the median
The coefficient of variation is calculated using:

Where:
mean
So:

Express percentage as decimal

Make
the subject

The coefficient of skewness is calculated using:

This gives:

Make
the subject

Equate both expressions for

Cross multiply


Collect like terms


Divide both sides by -0.88

Hence:

Calculate



So:
Also, the coefficient of skewness is calculated using:


Multiply both sides by 30

Divide both sides by 3


Collect like terms

