Respuesta :

pradipdhawal12345

let 1st and 2nd no be x and y respectively

1st case:x=4y

2nd case:x-y=12

substituting the value of x in 2nd case

4y-y=12

3y=12

y=12÷3

y=4

now putting the value of y in 1st case

x=4×4

=16

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