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Earn 100
The owner of an art shop conducts his business in the following manner: every once in a while he raises his prices by , then a while later he reduces all the new prices by . After one such updown cycle, the price of a painting decreased by . After a second up-down cycle the painting was sold for . What was the original price of the painting?
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Important Questions on Taste of The Exams - Block II & III
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A set of consecutive positive integers beginning with is written on the blackboard. A student came along and erased one number. The average of the remaining numbers is . What was the number erased?
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Three math classes: and take an algebra test.
The average score in class is
The average score in class is
The average score in class is .
The average score of all students in classes and together is
The average score of all students in classes and together is
What is the average for all the three classes?
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can complete a piece of work in days. takes double the time taken by takes double that of , and takes double that of to complete the same task. They are paired in groups of two each. One pair takes two-thirds the time needed by the second pair to complete the work. Which is the first pair?
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A college has raised of the amount it needs for a new building by receiving an average donation of from the people already solicited. The people already solicited represent of the people the college will ask for donations. If the college is to raise exactly the amount needed for the new building, what should be the average donation from the remaining people to be solicited?
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At his usual rowing rate, Rahul can travel miles downstream in a certain river in less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for this miles round trip, the downstream miles would then take only less than the upstream miles. What is the speed of the current in miles per hour?
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Fresh grapes contain water by weight while dried grapes contain water by weight. What is the weight of dry grapes available from of fresh grapes?
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A train approaches a tunnel . Inside the tunnel is a cat located at a point that is of the distance AB measured from the entrance . When the train whistles the cat runs. If the cat moves to the entrance of the tunnel , the train catches the cat exactly at the entrance. If the cat moves to the exit , the train catches the cat at exactly the exit. The speed of the train is greater than the speed of the cat by what order?
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Three small pumps and a large pump are filling a tank. Each of the three small pumps works at the rate of the large pump. If all four pumps work at the same time, they should fill the tank in what fraction of the time that it would have taken the large pump alone?
