Asked by Anonymous
As part of a fitness program, Annie walks for 35 mins on day 1, and increases the walking time by 8 mins each day. She completes the fitness program on the day she first spends more than 3 hours walking. The program is completed on what day?
This is how I did it.
3 hours would be equal to 180 mins.
180 = 35 + (n-1)(8)
180 = 35 + 8n-8
180 = 27 + 8n
153 = 8n = 19.125. If I round that, then it would be 20. So I had to round it to get an answer, am I supposed to get a whole number in the starting?
This is how I did it.
3 hours would be equal to 180 mins.
180 = 35 + (n-1)(8)
180 = 35 + 8n-8
180 = 27 + 8n
153 = 8n = 19.125. If I round that, then it would be 20. So I had to round it to get an answer, am I supposed to get a whole number in the starting?
Answers
Answered by
Steve
Yes. They ask what day. That would be day 20. At the end of day 19, she still had not walked for 3 hours.
They didn't ask at what point she had walked three hours, but rather the day number.
They didn't ask at what point she had walked three hours, but rather the day number.
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