Railway Rrb Exam Template With Answers Page 7
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42Railway RRB : Model paper 1
23. A man buys some mangoes @ 9 for a rupee and an equal number @ 7 for a rupee.
After that, he sells them @ 8 for a rupee. His gain or loss percent is:
b) 3 1 8 % Gain
a) 0
c) 3 1 8 % Loss
d) 1 9 16 % Loss
e) 25 16 % Gain
24. Two fill pipes A and B can fill a tank in 30 and 20 hours respectively. Pipe B alone
is kept open for half the time and both pipes are kept open for the remaining time.
In how many hours, the tank will be completely full.
a) 25h
b) 15h
c) 40h
d) 28h
e) 35h
25. Three taps A, B and C can fill a tank in 12, 15 and 20h respectively. If A is open all
the time and B and C are open for one hour each alternatively, the tank will be filled
in:
a) 6h
b) 7h
c) 5h
d) 9h
e) None of The Above
Page 6
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