Peter, paul and mary, whose walking rates are 1 ft/sec, 3 ft/sec and 6 ft/sec, start walking together in the same direction around a circular track that is 300 feet in circumference. after how many minutes are peter, paul and mary together again?

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?