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The sum of three consecutive odd natural numbers each divisible by 3 is 72. What is the largest among them?

Solution

Let the number be 3x,3x+3 and 3x+6

3x+3x+3+3x+6=72

⇒9x+9=72

⇒9x=72-9=63

⇒x=63/9=7

Largest number:

=3x+6=3*7+6=27

Than the answer is 27.