‘A’ alone can do some work in 22 days. ‘B’ and ‘C’ together can do the same work in 12 days. If ‘B’ is half as efficient as ‘A’, then find the time taken by ‘C’ to complete the work alone.
Let the total work be 132 units. {LCM (22 and 12)} So, efficiency of ‘A’ = (132/22) = 6 units/day So, efficiency of ‘B’ = (6 x 0.5) = 3 unit/day Efficiency of ‘B’ and ‘C’ together = (132/12) = 11 units/day So, efficiency of ‘C’ = 11 – 3 = 8 units/day So, time taken by ‘C’ to finish the work alone = (132/8) = 16.5 days
A is more intelligent than B, B isn’t as intelligent as C. C is more intelligent than D but not as good as A. Who’s the most intelligent of them all...
In a class of 40 students, Monika is 13th from the left and Rakesh is 32th from the right end. How many students are there between...
Sunil ranks twenty - first in a class of 65 students. What will be his rank if the lowest student is assigned as rank 1?
Who has second highest number of medals?
There are five persons H, U, L, W and C, who have different heights. H is taller than C but shorter than W. L is shorter than H. U is the shortest among...
Five boys N, O, P, Q and R are sitting in a row facing north. Each one has a different weight. The one who is second heaviest has a weight of 68 kg. N ...
If Karan scored 151 runs in match U, then runs scored by Karan in match S can be _____.
Among seven students D, E, F, G, H, I and J. I is heavier than J but lighter than G. F is heavier than E. D is the heaviest. E is fourth heaviest. H is ...
Five persons G, P, B, W and D have different weights. Only one person has more weight than D. P is heavier than W but not the heaviest. Weight of secon...
Ramesh ranked 16th from the top and 21 from the bottom in his class in an examination. If only 21 students passed the exam, how many students in his cla...
