railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Average

Average age of a group of 27 boys is 21 years. If a boy leaves the group, then the average age becomes 21.7 years. What is the age of the boy who left the group?

1

2.5 years

2

2.8 years

3

3.4 years

4

2 years

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