The average monthly salary of 660 workers in a factory is Rs. 380. The average monthly salary of officers is Rs. 2100 and the average monthly salary of the other workers is Rs. 340. Find the number of other workers.
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The average age of 30 students is 9 years. If the age of their teacher is included, the average age becomes 10 years. The age of the teacher (in years) is :
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2
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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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3
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The average of four consecutive even numbers is 15. The 2nd highest number is :
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4
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The average of 11 results is 60. If the average of first six results is 58 and that of last six is 63, find the 6th result-
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5
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The average of the largest and smallest 3 digits numbers formed by 0, 2 and 4 would be :
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6
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A batsman makes a score of 270 runs in the 87th inning and thus increase his average by a certain number of runs that is a whole number. Find the possible values of the new average.
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7
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The mean weight of 34 students of a school is 42 kg. If the weight of the teacher be included, the mean rises by 400 grams. Find the weight of the teacher (in kg.)
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8
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Find the average of the first 40 natural numbers.
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9
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Find the average of 205, 302, 108, 403, and 202-
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10
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The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The average of the remaining two numbers is :
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