PDF chapter test TRY NOW

Answer variants:
9
13
11
10
The number of people visiting a zoo during weekends is given below. Determine the value of "\(f\)" if the mean of the following data is 35.
 
Age\(0 - 10\)\(10 - 20\)\(20 - 30\)\(30 - 40\)\(40 - 50\)\(50 - 60\)\(60 - 70\)
Number of people27\(f\)43106
 
The value of the variable is
.