Question

1 by 5 of a number is subtracted from 1 by 3 of a number and the result is 25 greater than 1 by 20 of a number find the number​

Answer 1

Let the number be x.

1/3x-1/5x=1/20x+25

1/3x-1/5x-1/20x=25

20x-12x-3x/60=25

5/60x=25

x=25*60/5

x=300

Answer 2

Answer:

let the no. be x

1/ 5 if a no. = 1/5 X x = x / 5

1/3 of a no. = 1/3 X x = x / 3

A/ C to question,

x / 3 - x / 5 = x/ 20 + 25

5x - 3x / 15 = x + 25 X 20 / 20

2x / 15 = x + 500 / 20

x = ( x+ 500) / (20 X 2) X 15

x = ( x + 500) / 8 X 3

x =3x + 1500 / 8

8x - 3x = 1500

5x = 1500

x = 300

therefore, the no. was 300