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Question
If a number is increased by 20, it becomes 45. Then the number is ______.
Solution
If a number is increased by 20, it becomes 45. Then the number is 25.
Explanation:
Let the number be x.
If it is increased by 20, it becomes (x + 20),
So, the equation formed is x + 20 = 45
⇒ x = 45 – 20 .....[Transposing 20 to RHS]
⇒ x = 25
Hence, the number is 25.
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