Mathematics, 16.09.2019 13:00, jadejordan8888

In a group of 40 people, 10 are healthy and every person the of the remaining 30 has either high blood pressure, a high level of cholesterol or both. if 15 have high blood pressure and 25 have high level of cholesterol,
a) how many people have high blood pressure and a high level of cholesterol?

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In a group of 40 people, 10 are healthy and every person the of the remaining 30 has either high blo...