Question

Express in form of p /q 0.00257 bar in 57

Answer 1

let x=0.002575757... equation no.1

multiply 1000 both side

1000x=2.575757...equation no.2

subtract equation 1 from 2

1000x-x=2.575757-.0.575757

=999x=2

=x=2/999 {ans}