Question

the sum of a number and one fourth of it is 40 what is the number?

Answer 1

 let no. be a

a+a/4 = 40

4a+a = 40x4

5a =  160

a = 32

Answer 2

   x+(x/4)   = 40
⇒(4*x+x)/4= 40
⇒ 5*x        = 40*4
⇒    x        = 8*4
⇒           x = 32