A group of 100 students was asked how many minutes each spent talking on their mobile phone during one day. The histogram summarises this information. [Figure - histogram]

1. (a)(i)Use the histogram to find the number of students who spent between 0 and 10 minutes talking on their mobile phone,[1]
2. (a)(ii)estimate the number of students who spent between 25 and 65 minutes talking on their mobile phone.[2]
3. (b)A pie chart is drawn to represent the information shown in the histogram. Calculate the angle of the sector that represents the students who spent between 0 and 10 minutes talking on their mobile phone.[1]

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