Question

Long Ears says he built 597 feet of fence. He added 5 and then 13 more feet. Steady removed 67 feet of the fence. Long Ears says that in total, the fence is 550 feet long. Is he correct?

• A. Yes, Long Ears is telling the truth.
• B. No, it should be 558 feet long
• C. No, it should be 548 feet long
• D. No, it should be 552 feet long

Answer 1

The correct option is C No, it should be 548 feet long

Length of fence Long Ears built $=597\text{feet}$
Lengths added $=5$ and $13\text{feet}=5+13=18\text{feet}$
Total length $=(597+18)\text{feet}$
Using the mental math ability of compensation, we can solve the problem.Length removed by Steady $=67\text{feet}$
Present length of the fence $=(615-67)\text{feet}$
Using the mental math ability of compensation, we can solve the problem.Therefore, Long Ears is incorrect and the length of the fence is 548 feet.