Solution:
Let x be the number
Triple the number=3x
According to the question,
3x+5=50
⇒3x+5−5=50−5 [Subtract 5 from both sides]
⇒3x=45
⇒ x = 45/3
[Divide 3 from both sides]
⇒x=15
∴15 is the required number. When it is tripled and increased by 5, we get 50.