Question

If a number is tripled and the result is increased by 5, we get 50. Find the number.

Answer 1

Let the required number be x.
According to the question, the number is tripled and 5 is added to it
∴ 3x + 5
or, 3x + 5 = 50
or, 3x + 5 − 5 = 50 − 5 [Subtracting 5 from both the sides]
or, 3x = 45
or, `(3x)/3=45/3` [Dividing both the sides by 3]
or, x = 15
Thus, the required number is 15.