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- A number is doubled and 9 is added.
Question 1:
A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number ? A. 2
B. 5
C. 7
D. 8
Feedback Let the number be v. Then, 3 (2x + 9) = 75.
2x + 9 = 25
2x = 16
x = 8
2x + 9 = 25
2x = 16
x = 8
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