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A number is doubled and 9 is added, If the resultant is tripled, it becomes 75. What is the number ?
Answer & Solution
Correct Answer:
Option
C
$$\eqalign{
& {\text{Let the number is }}x{\text{}} \cr
& {\text{According to question,}} \cr
& {\text{3}}\left( {2x + 9} \right) = 75 \cr
& 2x + 9 = 25 \cr
& x = \frac{{16}}{2} \cr
& x = 8 \cr} $$
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