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Explanation
- A number is doubled and 9 is added.
- Resultant is trebled, it becomes 75.
The number can be figure out as:
Let suppose the number is y.
Now, number “y” is double and 9 is added
2y + 9
Resultant (2y + 9) is trebled
3(2y + 9) = 75 ________ (i)
Value of y can be find out easily from equation (i) by just simplifying it (y = 8).
To Find
Number = ?
Solution
Let suppose
Number = y
According to the given condition
3(2y + 9) = 75
2y + 9 = 25
2y = 25 – 9
2y = 16
y = 8
Required Number = 8 answer
Conclusion
A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. The required number is 8.
 = 75 gives the required number which is 8.){kind=link}