Gerry and Alain run around a running track To run around the track once
a) Gerry always takes 90 seconds
b) Alain always takes 105 seconds
They start together at the same point
After how many minutes are they next together at that point?

Who long does it take to drive 150 miles at 45 miles per hour

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample

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