The average weight of 10 oarsmen in a boat is increased by 1.5kg when one of the crew who weighs 58kg is replaced by a new man.
73 Kg
64 Kg
12 Kg
34 Kg
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1
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The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then
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2
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The average sale of car dealership was 15 cars per week. After a promotional scheme the average sale increased to 21 cars per week. The percentage increased in the sale of cars was
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3
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The average of the first five multiples of 9 is:
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4
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The average of two numbers is XY. If one number is X, the other is
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5
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The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is :
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6
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The mean of 25 observations was found to be 78.4. But later on it was found that 96 were misread as 69. The correct means is
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7
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Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included , the average is increased by 1 kg. The weight of the teacher is ?
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8
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If the average of x and 1/x(X\( \ne \)0) is M, then the average of x2 and 1/x^{2} is :
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9
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The average income of A, B and C is Rs. 12,000 per month and average income of B, C and D is Rs. 15,000 per month. If the average salary of D be twice that of A, then the average salary of B and C is in Rs. :
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10
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The average (arithmetic mean) of 330, 360 and 390 is :
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