Nikki’s cousin lives 60 miles away, so Nikki decided to take the train to visit him. If the trip took 2 hours, how many miles per hour did the train travel?

36 inches/second = yards/minute how many yards?

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Kai walked one and two-thirds of a mile on saturday and four and one-sixth of a mile on sunday. how many miles did kai walk?