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1. |
Mean of the data 2, x, 7, 3, y, 9, 6 is 6 where x and y are constants. If x is replaced by 3x + 1 and y is replaced by y + 3, then the mean increases by 2. Find the value of x. |
A. | 8 |
B. | 5 |
C. | 10 |
D. | 7 |
Answer» C. 10 | |