Question
The average age of a group of 6 friends is 30 years. If
the oldest friend leaves the group, the average age of the remaining group decreases by 2 years. Find the age of the friend who left.Solution
Let the age of the oldest friend (who left) be y years. Total age of 6 friends = 6 x 30 = 180 years. After the oldest friend leaves, the average age of the remaining 5 friends is 30 - 2 = 28 years. So, total age of remaining 5 friends = 5 x 28 = 140 years. Now, Age of the oldest friend = Total age of 6 friends - Total age of 5 friends = y = 180 - 140 = 40 years.
Statement: X > Y > Z; A > C > X; A < D
Conclusion: I. Z < AÂ Â Â Â Â Â II. C > Y
A statement is given, followed by four conclusions given in the options. Find out which conclusion is true based on the given statement.
Statemen...
Statement:
J < K ≤ M > O; M > P < Z; Z = R
Conclusion:
I. P < K
II. R > K
Statements: C > G > E; E = F; G < HÂ
Conclusions: I) F < GÂ
II) E < CÂ
III) C > H
Statements: H ≥ I > J, K > J, L = M ≥ J
Conclusions:
I. L > K
II. H > J
Statements:K < L,L ≥ M,M > N
Conclusions: I. K < M II. N > K
Statements: G > H = M; N < R = H; S > R
Conclusions:
I. S > M
II. G < S
III. N > G
What should come in the place of question mark (?) in the given expression so that the expression T > Z is definitely true and Y ≥ W is definitely...
- Statement: J > F ≥ G = H ≥ I ≥ E = K ≤ D
Conclusions:
I. J > E
II. D ≥ H
III. I < F Statements: Â Â Â Â Â Â Â Â Â S%R, R@U, U & V, V # N
Conclusions : Â Â Â Â Â Â Â Â Â
I. N @ U Â
II. R @ NÂ Â Â Â
II...