Question
In an Aerobic class, the average age of all the members
was 54.5 years, 11 members left the class and 7 new members joined. If the average age increased by 3 years and the total age decreased by 140, what was the number of members in the class initially?Solution
Let the original member be x Total age of these members = 54.5x Total age of (x – 4) members = (54.5x  – 140) years According to the question,  54.5x  – 140 = (x  – 4) `xx` 57.5 ⇒ 54.5x  – 140 = 57.5x  – 230 ⇒ 57.5x  – 54.5x  = 230 – 140 ⇒ 3x = 90  x = 30
Statements: Q © E, S % C, E $ S, C @ AÂ
Conclusions:Â
I. A © CÂ
II. S % AÂ
III. C © Q
Statements: Â A % I, IÂ * Â Q, Q % R, R $ M
Conclusions :
I. Â M # I
II. M # Q
III. I # R
IV. Q % A
Statements: F > C > K; L < G < D; C ≥ H < D > I
Conclusions:
I. L < C
 II. K > I
III. F > H
Statement: A > B = C < D > E; F ≤ H < I; E > G > I
Conclusions:
I. D > F
II. F < G
III. B < G
Statements:Â Â Â Â Â Â A % B & Z % F; F # C & E; E @ P # D
Conclusions :Â Â Â Â Â I. C @ PÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. A % PÂ Â Â Â Â ...
Statements:
L ≥ M = N < P; O < Q ≥ R =S ≥ L
Conclusions:
I). Q > M
II). Q = N
Which of the following symbols should replace the sign (@) respectively in the given expression in order to make the expression Y ≥ Z and D > K defin...
A statement is given, followed by two conclusions I and II. Decide which of the given conclusions is/are true based on the statement. Â
Statemen...
In the following question, a relationship between different elements is shown in the statements, followed by two conclusions I and II. Assuming the stat...
Statements:
Z > N ≥ B = J ≤ M; Y ≥ U > N ≥ P
Conclusions:
I). P ≤ Z
II). M > Y
...
