The average age of 16 students is 15 years. When a boy of age 18 years leaves , what will be the average age of remaining 15 students
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average = total age/ no. of students
15 = total age/16
total age = 240
new average = (240 - 18)/15
= 222/15
=14.8
15 = total age/16
total age = 240
new average = (240 - 18)/15
= 222/15
=14.8
Answered by
1
Average age of 16 students is 15 years.
Sum of ages of all 16 students=16×15=240.
240-18=222.
Now the average age of remaining 15 students is 222÷15=14.8
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