The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.
The measure of the central angle of the sector representing number of people whose favourite movie is C is ________ degrees.
The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.
What is the total numbers of people who have responded to the survey?
The pie chart shows the results of an online survey which asked people about their favourite movie. Study the diagram and answer the following questions.
Which movie is the favourite of most people surveyed?
A boat goes 8 km upstream and 12 km downstream in 7hours. It goes 9 km upstream and 18 km downstream in 9 hours. What is the speed (in km/h) of the boat in still water?