ATQ, When work is constant, ratio of efficiency is inverse of ratio of time taken. So, ratio of efficiency of 'Aditi' and 'Beena' = 5:6 So, ratio of time taken by 'Aditi' and 'Beena' to finish the work = 6:5 Time taken by 'Beena' alone to finish the work = 12 × (5/6) = 10 days And ratio of efficiency of 'Beena' and 'Chinky' = 4:5 So, ratio of time taken by 'Beena' and 'Chinky' to finish the work = 5:4 Time taken by 'Chinky' alone to finish the work = 10 × (4/5) = 8 days Let, the total work be 120 units {LCM of (8, 10 and 12) } So, efficiency of 'Aditi' = (120/12) = 10 units/day Efficiency of 'Beena' = (120/10) = 12 units/day Efficiency of 'Chinky' = (120/8) = 15 units/day Work done by 'Aditi' and 'Beena' together in 3 days = (10 + 12) × 3 = 66 units Remaining work = 120 - 66 = 54 units So, the time taken by 'Beena' and 'Chinky' together to finish the remaining work = {54/(12 + 15) } = (54/27) = 2 days
In which date of the month is Dheeraj’s birthday?
I. Dheeraj correctly remembers that his birthday is among 22,23,24,25.
II. Dheeraj...
Six persons D, E, F, G, H, and I stand in a queue according to their weight. Who among the following is just heavier than D?
Statement I: H is ...
The question given below consists of two statements numbered I and II given below it. You have to decide whether the data provided in the statements ar...
How is I related to M?
I. K who has only two kids I and M, is the mother-in-law of J who is sister-in-law of M.
II. H the sister-in-law...
A question is given, followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements is sufficient to ...
Among 6 friends, P, Q, R, S, T and U, who is third tallest?
I. R is taller than only S.
II. T is taller than P and U but is not the talles...
Among N, O, P, Q, which school has the highest number of students?
I. School N has fewer students than school Q.
II. School P has...
What is the code of ‘good morning’ in the certain code of language?
Statement I: In a certain code of language ‘all said good morning’ ...
Among E, G, H, I, J and K, who is second to the left of G if all are sitting around a circular table facing the centre.
I. J sits third to left o...
How is ‘ready’ written in a code language?
I. In the code language ‘ready to go’ is written as ‘so lo do’ and ‘ready the way’ ...