First pipe can fill a tank in 12 hours. Second pipe can fill the same tank in 6 hours. Third pipe in 4 hours. How long will it take to fill the tank if all the 3 pipes are opened simultaneously?
a) 2 hrs b) 3 hrs c) 4 hrs d) 12 hrs
A and B can do a work in 12 days, B and C can do it in 15 days, C and A can do it in 20 days. Then the number of days required to complete the work A, B, C together is
a) 5 b) 10 c) 15 d) 20
7 men can complete a work in 12 days. They started the work and after 5 days, two men left. In how many days will the work be completed by the remaining men?
a) 5.8 days b) 6.8 days c) 9.8 days d) 8 days
8 men and 12 women can complete a work in 10 days while 6 men and 8 women in 14 days. Number of days taken by a man alone to complete the work is
a) 210 b) 70 c) 280 d) 140
What sum of money will amount to Rs.2,704 in 2 years at 4% Compound interest?
a) Rs.2000 b) Rs.2200 c) Rs.2500 d) Rs.1800
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