Question

the average of 10 natural no. is 25. if 6 are added to five numbers find the new average. (the ans should be 28 i want explanation )​

Answer 1

Given: Average of 10 natural numbers is 25. 6 is added to five numbers.

To find: New average

Explanation: Average= Sum/Total number given

25= Sum /10

Sum = 250

Now, when 6 is added to 5 numbers then increase in sum= 6+6+6+6+6= 6*5=30

Therefore, new sum= 250+30= 280

Now, new mean= New sum/ 10

= 280/10

= 28

Therefore, the new mean is 28.