Question

Frank is walking 2/3 mile.After walking 1/4 mile, he stopped to rest. Use benchmark fraction to estimate how far Frank has left to walk. Explain your answer.

Answer 1

Frank has at least a month of jogging left. Seriously, he couldn't make it more than a quarter of a mile? Frank is clearly out of shape. His best bet at this point is to put down the Big Mac and hit the gym.
Also, here's the real answer:
2/3-1/4
8/12-3/12
5/12
Frank has 5/12 mile left