Question
Speed of current is equal to 20% of speed of boat in
still water. If the boat takes 2 hours to cover 120 km in still water, then find the time taken by the boat to cover 72 km in upstream.Solution
Speed of the boat in still water = 120 ÷ 2 = 60 km/h Speed of current = 60 × 0.20 = 12 km/h Therefore, upstream speed of the boat = 60 – 12 = 48 km/hr Required time taken = 72 ÷ 48 = 1.5 hours
Three statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at a variance wi...
Statement:
Some P are Q
Only a few R are S.
Only a few S are T.
Only S are P.
Conclusion...
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Statement:
Some dogs are cats.
No lion is a dog.
Conclusions:
I. Some cats are lions.
II. Some cats are not lio...
Statements:
Only a few Fruit is Colour.
All Vegetables are Colours.
No Vegetable is a Soup.
Conclusions:
I...
Statements :No mango is a guava.
Some guavas are oranges.
Some oranges are apples.
Conclusions :I. Some apples are oranges.
...
In the given question, three conclusions are given and five statements as 1), 2), 3), 4) and 5). You need to choose the option that contains the set of...
Statements: Some windows are door.
                         Some door are watch.
Conclusions: I. Some windows a...
Statements: All hotels are busses.
Some buses are cars.
All cars are trams.
Some trams are clouds.
Conclusions:I. some trams...
In the questions given below, there are three statements followed by three conclusions I, II and III. You have to take the three given statements to b...