In a group of people 5 play golf, 8 play cricket and 3 play both. It is known that the heart rate of golf player is 98bpm, the heart rate of a cricket player is 102bpm and the heart rate of people who play both is 100bpm. Find the average heart rate of the group.

Correct Answer: 100.6
Total number of players = people who play golf + people who play cricket – people who play both = 5 + 8 – 3 = 10 People who play only cricket = 8 – 3 = 5 People who play only golf = 5 – 3 = 2 Total of bpm of players = 5 * 102 + 2 * 98 + 3 * 100 = 510 + 196 + 300 = 1006 Average of the bpm = 1006 / 10 = 100.6