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Let the total work = 200 units Then, efficiency of ‘A’ = (200/50) = 4 units/hour Work completed by ‘A’ alone in 20 hours = 4 × 20 = 80 units Remaining work = 200 – 80 = 120 units So, efficiency of ‘B’ = 120/10 = 12 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 12 + 4 = 16 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (200/16) = 12.5 hours
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Only Peripheral are Computer.
Some Hardwares are Peripherals.
Some Hardwares are Devices.
No Hardware is a Monito...
At least some singers are dancers. Some dancers are not lyricist.
Statements:
Some Facebook are Reels.
All Meta are Reels.
Only a few Reels are Views.
Conclusions:
I. All Reels ...
Statement:
Only few cars are bus.
No buses are train.
Only bikes are train.
Conclusion: 1. Some buses are cars.
2. ...
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Statements: All books are notebooks.
Some notebooks are novels.
In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be tru...
Statements:
All Ray are Colour.
No Colour is Cloud.
Some Cloud are Rain.
Conclusions:
I. No Ray is Rain.
II. S...
Statements:
Some pulses are grams.
No pulse is a bean.
All grams are wheat.
Conclusions:
I. All wheat being pulses i...