the average of 10 students in a class is 12 a new Students joins the group and the average becomes12.what is the likely age of the new student
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total age before new student joins =10×12=120
total age after joining new student =11×12=132
so new student age =132-120
=12yeara
hope u got it
total age after joining new student =11×12=132
so new student age =132-120
=12yeara
hope u got it
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