FOR CHILDREN

PROBLEM # 1
One chicken lays two eggs in three days. How many eggs do three chickens lay in seven days?

FOR GROWNUPS

PROBLEM # 2
You walk upwards on an escalator, with a speed of 1 step per second. After 50 steps you are at the end. You turn around and run downwards with a speed of 5 steps per second. After 125 steps you are back at the beginning of the escalator. How many steps do you need if the escalator stands still?

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SOLUTIONS TO PROBLEMS ON 09/07/06

FOR CHILDREN

PROBLEM # 1
Consider the numbers from 1-500 inclusive.  What is the difference between the sum of all the even numbers and the sum of all of the odd numbers?

SOLUTION
250.

FOR GROWNUPS

PROBLEM # 2
A and B are whole numbers and neither of which are divisible by 10. If the product of A and B equals 20000, find the absolute value of the difference of A and B.

SOLUTION
593.

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