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Question : The sum of three consecutive natural numbers divisible by 3 is 45. The smallest number is:

Option 1: 18

Option 2: 3

Option 3: 12

Option 4: 9


Team Careers360 7th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 12


Solution : Let the three consecutive numbers divisible by 3 be (x – 3), x, and (x + 3).
According to the question,
(x – 3) + x + (x + 3) = 45
⇒ 3x = 45
⇒ 3x = 45
⇒ x = $\frac{45}{3}$ = 15
So, the numbers are 12, 15 and 18.
Hence, the smallest number is 12.

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