The following are the ages (years) of 5 people in a room:
23, 20, 15, 12, 17
A person enters t...
Mathematics, 31.03.2021 14:00 abbieT6943
The following are the ages (years) of 5 people in a room:
23, 20, 15, 12, 17
A person enters the room.
The mean age of the 6 people is now 19.
What is the age of the person who entered the room?​
Answers: 3
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The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.
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