Maths Puzzles Questions with Answers for Competitive Exams
Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, and Pipe C alone can empty the full tank in x hours. All the pipes were opened together at 10:30 a.m, but C was closed at 2:30 p.m. If the tank was full at 8:30 p.m on the same day, then what is the value of x?
(A) 48
(B) 96
(C) 64
(D) 45
Correct Answer : B
If $$ {0.7\over 1-6c}=-0.2$$ then what is the value of c.
(A) 0.075
(B) 0.75
(C) 0.5
(D) 0.8
Correct Answer : B
What will be the total number of pieces if the length of $$ {5}{1\over4}$$ the rib is cut to 3/4 m length?
(A) 3
(B) 5
(C) 6
(D) 7
Correct Answer : D
If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is :
(A) 4 hr
(B) 7 hr
(C) 2 hr
(D) 3 hr
Correct Answer : A
A man can row at a speed of $$4{1\over 2}$$km/hr in still water. If he takes 2 times as long to row a distance upstream as to row the same distance downstream, then the speed of stream (in km/hr) is :
(A) 2
(B) 2.5
(C) 1
(D) 1.5
Correct Answer : D
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Vikram Singh
Providing knowledgable questions of Reasoning and Aptitude for the competitive exams.
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