Question
‘A’ alone can complete a work in 60 hours. ‘A’
started the work alone and left after working on it for 40 hours. If ‘B’ completed the rest of the work in 20 hours then find the time taken by ‘A’ and ‘B’ together to complete the whole work.Solution
Let the total work = 300 units Then, efficiency of ‘A’ = (300/60) = 5 units/hour Work completed by ‘A’ alone in 40 hours = 5 × 40 = 200 units Remaining work = 300 – 200 = 100 units So, efficiency of ‘B’ = 100/20 = 5 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 5 + 5 = 10 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (300/10) = 30 hours
Select the option that expresses the given sentence in reported speech.
The manager said to his employees, “As it is high time for the compa...
Select the option that expresses the given sentence in passive voice.
The scientist conducted the experiments in a controlled environment, whi...
Identify the highlighted part of speech, choose the correct answer
His ability to concentrate is legendary
Choose the correct combination of grammatically incorrect sentences
I. Governance is still perceived to lag behind private sector management, ...
Select the option that best conveys the original sentence's meaning and in a grammatically correct way.
The law firm's reputation for integr...
In the sentence, "She was so tired that she could hardly keep her eyes open," what type of conjunction is "that"?
I am posted upto date _______ your case.
The mistake of selecting a wrong properties (A)/ may give lifelong misery , (B)/as it may entangle you in (C)/legal disputes running to years, (D)/and ...
Select the correctly punctuated sentence from the options below.
Even in the face of adversity, the stoic soldier remained calm and composed, displaying remarkable courage and resilience.
