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Out of 100 members of a group 20% likes tea, 50% of the rest likes coffee and the rest likes milk. A glass of milk gives 10 units of energy, a cup of coffee gives 8 units of energy and a cup of tea is good enough for 15 units of energy. Find the average of the units of energy that the members of the group gained.

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Out of 100 members of a group 20% likes tea, 50% of the rest likes coffee and the rest likes milk. A glass of milk gives 10 units of energy, a cup of coffee gives 8 units of energy and a cup of tea is good enough for 15 units of energy. Find the average of the units of energy that the members of the group gained.






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