One housekeeper can clean a hotel room twice as fast as another one. Working together they can clean a room in 8 minutes. How long does it take for each housekeeper to clean a room?

Two groups of students were asked how many hours they spent reading each day. the table below shows the numbers for each group: group a 1 2 1 1 3 3 2 2 3 group b 3 2 3 2 2 2 1 1 2 based on the table, which of the following is true? the interquartile range for group a students is 0.5 less than the interquartile range for group b students. the interquartile range for group a students is equal to the interquartile range for group b students. the interquartile range for group a employees is 0.5 more than to the interquartile range for group b students. the interquartile range for group a employees is 1 more than the interquartile range for group b students.

Who ever answers this will get a cookie from batman

Aregular octagon rotates 360 degrees about its center. how many times does the image of the octagon coincide with the preimage during the rotation?