6th grade Math
posted by Lindsey .
Your brother pulls his sled up a hill. Each minute he moves forward 20 feet, but he also slides backward 3 feet. Describe how you can determine the time he needs to pull his sled 130 feet forward.

Seven forward followed by seven backward steps moves him 17 x 7 = 119 feet forward
The next forward step takes him 20 feet forward to 139 feet 
i need help with math

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.
Second, state in detail the specific problem(s) that is/are giving you trouble.
I hope this helps. Thanks for asking.