Question

The average of 60 results is 40 and the average of another 40 results is 60.what is the average of all the results?

Answer 1

48 is the required answer for the given question

Answer 2

Answer:

24

Step-by-step explanation:

Average of a no of observations = (Sum of observations)/(No of                     observations)

Average of 60 results = 40

Therefore $40 = \frac{SUM}{60}$

Sum of 60 results= 2400

Average of another 40 results = 60

Therefore $40 = \frac{SUM}{60}$

Sum of another 40 results = 2400

Total sum = 2400+2400 = 4800

Total no of observations = 60+40 = 100

Average = $\frac{SUM}{OBSERVATIONS}$

Average = $\frac{4800}{100}$= 48

#SPJ2