There are 9 blocks so they will require 9 berries

The strawberry weighs 60 grams
The blackberry weighs 10 grams
The blueberry weighs 20 grams

The blueberry costs 2.5 cents and the lemon costs 52.5 cents which is fifty cents more.

The farmer lost $100. The thief used the money to buy $70 dollars of blueberries. It is not a question of how much the blueberries cost the farmer but how much he could have sold them for. Plus the 30 dollars in change he gave back.

Answer:

Answer:

199 years. There was no year zero between 1 BC and 1 AD.

Answer:

1.Fill up the 5 gallon bucket.
2. Pour three gallons from the 5 gallon bucket into the three gallon bucket.  Now empty the three gallon bucket. 
3. Now pour the two remaining gallons from the five gallon bucket into three gallon bucket. 
4. Refill the five gallon bucket.
5. Top off the three gallon bucket from the five gallon bucket. This will take one gallon leaving four gallons in the five gallon bucket.

Answer: 

99 Days. The weeds double every day so if the field was full of weeds in a hundred days it would be half full the day before. Many people answer 50 because they halve the number 100.

Answer: 

Divide the berries into three groups of three. Weight two of these groups and set the third group aside. If the one group is heavier than the other you know which group contains the heaviest berry. If both groups balance then the heaviest berry is in the third group.

Take the group with the heaviest berry and put two of the berries on the scale and set the third berry aside. If scales do not balance you know which berry is the heaviest. If the scales balance, then the third berry is the heaviest.

Answer: 

There are more squares in a chess board than the 64 1 × 1 squares.
The squares start from 1 x 1 all the way up to 8 × 8.
Let us count them and find a way to add all of them.

1. 1 × 1 squares – 8 squares across the width and 8 squares along the length = 8 × 8 = 64
2. 2 × 2 squares – with the size of the square increasing by 1 square the number of squares across the width will be down to 7 and the ones along the length will also be down to 7. So, there are 7 × 7 = 49 (2 × 2) squares.
3. 3 × 3 squares – 6 squares across the width and 6 along the length = 6 × 6 = 36 (3 × 3) squares.
4. 4 × 4 squares – 5 squares across the width and 5 along the length = 5 × 5 = 25 (4 × 4) squares.
5. 5 × 5 squares – 4 squares across the width and 4 along the length = 4 × 4 = 16 (5 × 5) squares.
6. 6 × 6 squares – 3 squares across the width and 3 along the length = 3 × 3 = 9 (6 × 6) squares.
7. 7 × 7 squares – 2 squares across the width and 2 along the length = 2 × 2 = 4 (7 × 7) squares.
8. 8 × 8 squares – 1 square across the width and 1 along the length = 1 × 1 = 1 (8 × 8) square.

Therefore, the total number of squares in a chess board = 64 + 49 + 36 + 25 + 16 + 9 + 4 + 1 = 204