Question
A boat running downstream covers a distance of 18 km in
2 hrs while it covers the same distance upstream in 3 hrs. Then speed of the boat in still water isSolution
Let the speed of boat in still water be a km/hr and that of stream be b km/hr. Therefore, 18/(a + b)= 2 ⇒ a + b = 9 ………..(i) 18/(a – b)= 3 ⇒ a + b = 6 ………..(ii) On adding, eq (i) and (ii) ⇒ 2a = 15 km/hr ⇒ a = 7.5 km/hr
Statements:
Few Orphan are Deaf.
All Deaf are Blind.
No Blind is Lame.
All Dumb are Lame.
Conclusion:
...Statements:
All rollers are coasters.
Some swings are rollers.
All bridges are swings.
Conclusions:
I. All coaste...
Statements:
All summers are winters.
Only a few summers are spring.
Some springs are autumn.
No autumn is season.
...
Statements: All red are yellow.
                            All yellow are pink.
Conclusions:Â Â I. Some pin...
Statements: All malware are spyware.
                           All spyware are viruses.
Conclusions: I....
Statements:
Some penguin are parrot
No parrot is a eagle
No penguin is a sparrow
Conclusions:
I. Some sparrow are not...
Statement :Â Some letters are alphabets.
                              All alphabets are words.
Some ...
Two statements are given followed by two conclusions numbered I& II. Assuming the statements to be true, even if they seem to be at variance with commo...
Statements:
Only shirt is pant.
Some clothes are shirts.
Only a few shoes are clothes.
Conclusions:
I. Some clot...
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...
