there are 20 students in drama class. The mean age of 12 students is 18 year and the mean age of remaining students is 2e years. find the mean age of all students in a drama class
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Given:
20 students
mean age of 12 students is 18 years
mean age of the remaining students is 23 years
12 * 18 = 216
20 - 12 = 8 * 23 = 184
216 + 184 = 400
400 ÷ 20 = 20
The mean age of all students in the drama class is 20 years.
20 students
mean age of 12 students is 18 years
mean age of the remaining students is 23 years
12 * 18 = 216
20 - 12 = 8 * 23 = 184
216 + 184 = 400
400 ÷ 20 = 20
The mean age of all students in the drama class is 20 years.
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