প্রশ্ন সংশোধন করুন
প্রশ্ন:
If the average (arithmetic mean) of x and y is 60 and the average(arithmetic mean)of y and z is 80,what is the value of(z-x)?
If the average (arithmetic mean) of x and y is 60 and the average(arithmetic mean)of y and z is 80,what is the value of(z-x)?