Question
X and Y alone can complete a work in 10 and 40 days,
respectively. 50% of the work is completed by Z in 20t days, and the remaining work is completed by X and Y working together in ‘t’ days. Find the time taken by Y and Z to complete the whole work while working together.Solution
Time taken by X and Y to complete the whole work while working together = (10 × 40)/(10 + 40) = 8 days So, t = 8/2 = 4 (Since, 50% of the work is done by X and Y together) As, time taken by Z to complete 50% of the work = 4 × 20 = 80 days So, time taken by Z to complete the entire work = 80 × 2 = 160 days Therefore, time taken by Y and Z to complete the whole work while working together = (160 × 40)/(160 + 40) = 32 days
In the question below, some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if ...
- Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance wi...
Statements:
No plant is a tree.
No tree is a shrub.
No shrub is a herb.
Conclusions:                  �...
Statements:
Only a few Radio are Gramophone
No Gramophone are TV
Only a few TV is Recorder
Conclusions:
In the quest...
Statements:Â
Only a few Apples are Kiwis.
All Kiwis are Pears.
No Pear is a Banana.
Conclusions:
I. Some Apples are ...
Statements: No data is a number.
Some numbers are not letters.
Only letters are consonants.
Conclusions: I. All letters may be co...
In the question below some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if t...
Statement:
Some Myntra are Ajio
Only a few Ajio are Amazon            Â
Conclusion:
I. Some M...
Statements:Some students are Rich.
     No Rich is a teacher.
Conclusions:I. Some teacher are not Rich.
  II. Some Rich...
Statements:
Only Biscuit are Chocolate.
Only few Biscuit are Snacks.
All Snacks are Beverages.
Conclusion:
Some B...
Relevant for Exams:
