Mathematics
07.07.2022 14:00
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The average age of the 12 people in a classroom is 10. After Ms. Xu walks into the
The average age of the 12 people in a classroom is 10. After Ms. Xu walks into the room,
the average age of everyone in the classroom increases to 12. How old is Ms. Xu?
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daijahamaker062816
4,5(47 marks)
24
Step-by-step explanation:
First: 12*10=120
Then: 12*12=144
=> Ms. Xu's old: 144-120=24
engbarthcobie
4,6(45 marks)
I believe it would be 5.1 if this is incorrect then I’m so sorry
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