Question

Find three consecutive odd natural number whose sum is 87.

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Answer 1

Let the first number be a

Second number = a +2

Third number = a + 4

According to question

a + a +2+a + 4 = 87

=> 3a + 6 = 87

=> 3a = 81

=> a = 27


First number = 27

Second number = 29

Third number = 31

Answer 2

Let one of the numbers be x
The other two numbers are x+2, x+4 ( since it is asked about consecutive odd numbers)
According to the question,
=>x + ( x+2) + ( x+ 4) = 87
=>x + x + x + 2 + 4 = 87
=>3x + 6 = 87
=>3x = 87 - 6
=>3x = 81
=>x = 27

The other two numbers are 27 + 2 = 29
                                               27 + 4 = 31
Therefore the numbers are 27, 29,31