A well digger was trying to rescue a dog from a well 30 feet deep
MATHEMATICS
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A well digger was trying to rescue a dog from a well 30 feet deep using a bucket. Each time he pulls up the rope 3 feet, it slides back 2 feet. How many times will he have to pull up the rope to bring the dog to the surface?
- A. 90
- B. 60
- C. 30
- D. 6
Correct Answer: C. 30
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