Question
An elephant can do a work as fast as two horses ‘A’
and ‘B’ can do it by working together. If horse ‘A’ alone can complete the work in 8 hours and horse ‘B’ in 12 hours, then find the time taken by elephant to complete the work.Solution
Let the total work = 24 units Efficiency of horse who can complete the work in 8 hours = 24/8 = 3 units/hour Efficiency of horse who can complete the work in 12 hours = 24/12 = 2 units/hour Therefore, time taken by both horses to complete the work together = 24/(3 + 2) = 4.8 hours Therefore, time taken by the elephant to complete the work = 4.8Â hours
In the question below there are three statements followed by three conclusions I, II and III. You have to take the three given statements to be true ev...
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Only a few constellation is movement
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Conclusions:
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Some hen are goat.
Conclusions I. Some hen are egg.
II. Some goat are egg.
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No Stick is Paper.
All Paper are Colour.
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I. All Kite are Colour.<...
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All Chain are Pocket
A few Zip are Pocket
Conclusions:
I. Some Zip can never ...
Statement:
Only a few Banana is Guava.
Some Guava is Leopard.                           Â
Some Leopa...
Statements:
No cabin is a room.
All rooms are houses.
No house is a flat.
Some flats are apartments.
Concl...
Statement: Â Â Â Â
Only a few A are B Â Â Â Â Â Â Â
Some B are C
 No A is C  Â
Conclusion: Â Â Â Â Â Â
I...
Statement : Â Some X are Y.
Only a few Z are X.
All Y are A.
Conclusion
I. All X are Z
II. Some A are Z
In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be tru...
