May 2021 2 115 Report
Average speed & venn diagram?

1) A cyclist travels uphill from A to B, a distance of 24km at an average speed of 12km/h. On the return journey downhill, his average speed is 36km/h. What is his average speed in kilometres per hour for the whole journey?

2) In a group of 40 students, 20 play tennis, 19 play volleyball and 6 play both tennis and volleyball. What is the number of students who play neither tennis nor volleyball?

Thanks in advance.


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