Let the speeds of boats ‘A’ and ‘B’ in still water be 8x km/hr and 9x km/hr Therefore, speed of the current = 0.25 × 8x = 2x km/hr According to the question, 8x + 2x = 750/7.5 Or, 10x = 100 Or, x = 10 Therefore, upstream speed of boat ‘B’ = 9x – 2x = 7x = 70 km/hr Downstream speed of boat ‘B’ = 9x + 2x = 11x = 110 km/hr Required time taken = (210/70) + (330/110) = 3 + 3 = 6 hours
Statements:
All hands are arms.
Each arm is leg.
Some hands are eyes.
No arm is an ear.
Conclusions:
I. Some a...
Statements:
90% English is Hindi
None of Hindi is Commerce
Only a few Commerce is Science
Conclusions:
I) Som...
Statements: All bulb are light.
No light is a tubelight.
Conclusions: I. Some light a...
Statements:
Only a few yarns are Mineral.
Some Mineral are chemical.
No chemical is textile.
Conclusions:
I. ...
Statements : Some books are novel.
Some novel are newspaper.
No newspaper is a magazine.
Conclusions : I . Some magazi...
In the question below some statements are given followed by two conclusions I and II. You have to take the given statements to be true even if they see...
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...
Statements:
Only a few Cups are Spoons
All Spoons are Forks
Some Forks are Plates
Conclusion:
I. Some Cups are ...
Statements:
A few Platform are Train
Only a few Train are SUV
Only Car are Bus
No SUV are Car
Conclusions:...
Statement
Only Pencils are Pen
Few Mobile are pencil
No Laptops are mobile.
Conclusion
I.A few pen being mobile...
