Question
A work can be completed by ‘A’ and ‘B’, alone in
20 days and 15 days, respectively. Find the number of days taken by ‘C’ to complete the same work alone if ‘A’, ‘B’ and ‘C’ together can complete the whole work in 5 days.Solution
Let total work = 60 units (LCM of 20 and 15) Efficiency of ‘A’ = (60/20) = 3 units/day Efficiency of ‘B’ = (60/15) = 4 units/day Combined efficiency of ‘A’, ‘B’ and ‘C’ = (60/5) = 12 units/day Efficiency of ‘C’ = 12 – (3 + 4) = 5 units/day Required time taken = (60/5) = 12 days
In the following sentences four words are given in bold. They may or may not be in the correct position in the sentence. You have to find out which tw...
In the following question, a sentence is given with certain phrases marked as (A), (B) and (C). Choose the option with the pair(s) of phrases that need ...
In the given question, four words are printed in bold and numbered A, B, C, and D. The positions of some highlighted words may be incorrect and need to...
In each of the questions given below three words are given in bold. These may or may not be in their correct position. The sentence is then followed by ...
In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then ...
In each of the questions given below four words are given in bold. These four words may or may not be in their correct position. The sentence is then f...
In each of the questions given below, four words are printed in bold. These four words may or may not be in their correct position. The sentence is fo...
In each of the following questions, a sentence is given with four words given in bold. Which of the following words should replace each other to form ...
Two sentences are given below, with three words emboldened in each of them. Interchange the words between two sentences to form a grammatically and con...
Two sentences are given below, with three words emboldened in each of them. Interchange the words between two sentences to form a grammatically and con...
Relevant for Exams:
