Question
The present average age of X, Y, and Z is 45 years. 8
years ago, the average age of X and Y was 38 years. What is the present age of Z?Solution
Let X, Y, and Z be P, Q, and R years old respectively. (presently) According to the question, (P + Q + R) ÷ 3 = 45 (P + Q + R) = 135 .... (1) {(P - 8) + (Q - 8)} ÷ 2 = 38 P + Q - 16 = 76 P + Q = 76 + 16 P + Q = 92 .... (2) Putting the value from (2) to (1), The present age of Z is 43 years.
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is/are definitely true and th...
In which of the following expressions does the expression ‘L > B’ and ‘R < N’ is true?
Statements: V ≥ O ≥ S = A > J, M < Y = P ≤ O > R
Conclusion:
I. O > M
II. A ≥ M
III. V > R
Statements: A > B ≥ C ≤ D; E ≥ F ≥ G = A
Conclusion:
I. E > D
II. D ≥ E
Statements: N < G ≥ F > E ≥ D, D = O ≥ I > P
Conclusions:
I. D < G
II. N > I
III. P < E
- Statements: F > G ≥ H = I < J = K ≤ L ≤ M = N
Conclusions:
I. M > J
II. G ≥ N
III. J = M In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and t...
In the following question the relationship between different elements is given in the statements followed by three conclusions I, II and III. Read the ...
In which of these expression ‘X ≤ B’ is definitely true?
Statement: I ≤ S, S < X, X = F, F ≤ K
Conclusion: I. K > I II. I < X
