Question

The sum of one-fourth,one-nineth and one-third of a number is 25. Find the number.

Answer 1

let the number be x
so
x/4+x/9+x/3= 25
(9x+4x+12x)/36=25
25x/36=25
x= 25×36/25
x= 36

hope it helps..

Answer 2

1/4+1/9+1/3+X=25
then LCM of 4,9,3=36
(1/4+1/9+1/3+x)/36=25
(24/36)+X=25
24+X=25*36
X=25*36/24
X=75/2