DAY 109
The average age of 10 people is 20. When Mr. Dee Krepit is added to the group, the average age is 25. How old is Dee?

Answer:

Dee is 75 years old..........for the average age of ten people to be 20, their ages must add up to 200. For eleven people to average 25, the total ages must be 11 x 25 = 275.

DAY 110
You have 45 candy bars. You are going to have a party, but you want to give the same number of candy bars to each guest. What are your choices as to how many people to invite to the party?

Answer:

You could invite one really good friend and give him all 45 candy bars, 3 friends and give them 15 each, five for 9 each, nine for 5 each, fifteen for 3 each, or 45 guests and give each person 1 candy bar.