Each of the nine paths in a park are 100m long. Anna wants to walk from A to B without using the same path twice. How long the longest path she can choose: A. 900m B. 800m C. 700m D. 500m E. 400m

Lets think of this as an algebraic equation. 200=nx2. If you think carefully about this problem, you can use the commutative property to find the value of n. Do the problem 200 divided by 2. 200 divided by 2 is 100, and so the value of n is 100. So 200 is 100 times as much as 2.