Question
An elephant can do a work as fast as two horses
lsquo;Arsquo; and lsquo;Brsquo; can do it by working together. If horse lsquo;Arsquo; alone can complete the work in 15 hours and horse lsquo;Brsquo; in 30 hours, then find the time taken by elephant to complete the work.Solution
Let the total work = 30 units Efficiency of horse who can complete the work in 15 hours = 30/15 = 2 units/hour Efficiency of horse who can complete the work in 30 hours = 30/30 = 1 units/hour Therefore, time taken by both horses to complete the work together = 30/(2 + 1) = 10 hours Therefore, time taken by the elephant to complete the work = 10 hours
In the question, assuming the given statements to be true, find which of the following conclusion(s) among the two conclusions is/are true and then give...
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 defini...
Statements:
A = B ≤ Y < Z; P ≤ I < A; M ≤ Y < N
Conclusions:
I). Â M < Z
II). Â P < Y
III). Â N > A
...In the following question, a relationship between different elements is shown in the statements, followed by two conclusions I and II. Assuming the stat...
Statement: T > B = P ≥ C ; B ≥ J > F; O ≤ J ≤ C
