Question
C can do a piece of work in 20 days, and D can do the
same work in 25 days. They start working together, but after 8 days, C leaves. In how many more days will D finish the remaining work?Solution
Work done by C in 1 day = 1/20 Work done by D in 1 day = 1/25 Work done by C and D together in 1 day = (1/20) + (1/25) Taking LCM of 20 and 25 = 100, Work done together = (5/100) + (4/100) = 9/100 Work done in 8 days = 8 × (9/100) = 72/100 = 18/25 Remaining work = 1 - 18/25 = 7/25 D’s work rate = 1/25 Time taken by D to finish = (7/25) ÷ (1/25) = 7 days. Correct Option: c) 7 days
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 then...
Statements: M > N > P ; P = Q ; N < R
Conclusions:
I. Q < N
II. P < M
III. M > R
Which of the following expressions will be true if the expression ‘D ≥ E < F = G’ is definitely true?
Statements: G ≤ F > B; A < H ≤ G; C < F ≤ D < E
Conclusions:
I. A < F
II. E > H
III. C < B
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...
Which of the following symbols should replace (1) and (2) respectively in the given expression in order to make the expression N > P definitely true?
In which of the following expressions the expression ‘Q ≤ N’ would hold definitely true?
Which of the following symbols should replace the sign (@) respectively in the given expression in order to make the expression P ≥ O and D > K defin...
Statements: M = R ≥ S , N = O > Q, Q > W = A < S
Conclusions :
I. N ≥ S
II. W > R
III. O ≤ S
Statements: R % U, U # V, V @ C, C * F
Conclusions :
I. F $ V
II. C % U
III. R % F
IV. U #...
