There are 41 students in a class whose average age is 16 yr.what will be the average age of the class,if two students of ages 17 yr and 19 yr are excluded and a student of age 20 yr is included?
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18 years is the average age of that class
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Answer:
16 is the right answer.
Step-by-step explanation:
average×no. of students= sum of age of students
16×41= 656
new average
656-17-19+20= 640
then average,
640÷40 = 16
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