Thien lives on the 11th floor of a building. he has to climb 48 steps just to get to the 3rd floor. How many steps does he have to take to reach the 11th floor?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81