Question

Can you please solve 5 ??

Answer 1

D. 18.

Explanation:

3 5 9 13 16 20

To find the average we add these up and divide by 6:

= 66 / 6

= 11.

Now we want to increase the average by 1 that is to 12 by adding one more number.

So our new total has to be 12* 7 = 84.

So our new number is 84 - 66 = 18.