Multiple Choice QuestionsA does one-fifth of a work in a week. B finishes the same in a fortnight. B starts the work and works only for 3 days. Thereafter A completes the job. He will finish it in
10 days
7 days
12 days
12 days
A tank can be filled by pipe A in 2 hours and pipe B in 6 hours. At 10 A.M. pipe A was opened. At what time will the tank be filled if pipe B is opened at 11 A.M.?
12.45 A.M.
5 P.M.
11.45 A.M.
11.45 A.M.
A swimming pool has 3 drain pipes. The first two pipes A and B, operating simultaneously can empty the pool in half the time that C, the 3rd pipe alone takes to empty it. Pipe A, working alone, takes to empty it. Pipe A, working alone, takes half the time taken by pipe B. Together they take 6 hours 40 minutes to empty the pool. Time taken by pipe A to empty the pool, in hours, is
15
10
30
30
A.
15
Let the time taken by pipe B to empty the tank = 2x hours
∴ Time taken by pipe A to empty the tank = x hours
(A and B) takes half of the time that c takes.
∴ Time taken by pipe C
A, B and C together take 6 hours 40 minutes
A can do a certain work in 12 days. B is 60% more efficient than A. How many days will B and A together take to do the same job?
2 men and 4 boys can do a piece of work in 10 days, while 4 men and 5 boys can do it in 6 days. Men and Boys are paid wages according to their output. If the daily wage of a man is ₹ 40, then the ratio of daily wages of a man and a boy will be
5 : 3
5 : 2
7 : 4
7 : 4
A, B and C can do a piece of work in 30, 20 and 10 days respectively. A is assisted by B on one day and by C on the next day, alternately. How long would the work take to finish?
A fan in a shop is offered at a discount of 10%. It is sold during clearance sale at 6% discount over the already discounted price at ₹ 846. The original marked price of the fan is
₹ 1000
₹ 946
₹ 850
₹ 850
A trader allows a trade discount of 20% and a cash discount of 
on the marked price of the goods and gets a net gain of 20% of the cost. By how much above the cost should the goods be marked for the sale?
40%
50%
60%
60%
A discount series of 10%, 20% and 40% is equal to a single discount of
56.80%
50%
70%
70%
Tarun bought a T.V. with 20% discount on the labelled price. Had he bought it with 25% discount, he would have saved ₹ 500. At what price did he buy the T.V.?
₹ 7,500
₹ 8,500
₹ 8,000
₹ 8,000
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