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ICSE Class 9 Answered

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Asked by aastharoy997 | 20 May, 2020, 10:08: AM
answered-by-expert Expert Answer
Average of 10 values is 485.
Sum of these 10 values = 485 x 10 = 4850
Increasing 3 values by 20 each and decreasing one value by 10, we have
New sum of these 10 values = 4850 + 20 + 20 + 20 - 10 = 4850 - 50 = 4800
Hence, the new average = 4800/10 = 480.
Answered by Renu Varma | 21 May, 2020, 10:12: AM
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