Question

The sum of three consecutive multiples of 3 is 72.Find the number

Answer 1

let multiples be 3x,3x+3,3x+6 3x+3x+3+3x+6=72 9x+9=72 9x=63 x=7 therefore numbers are 21,24,27

Answer 2

Let the unknown multiples be x, x+3, x+6   x+x+3+x+6=72  = 3x+9=72  =3x=72-9=63  3x=63  x=21  x+3=24 &   x+6=27..   Hope this answer will help you..