Question

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Answer 1

Answer:

let the denominator be y

then required number is,

(y-3)/y

from question

{3(y-3)}/(y+20)=1/8

or,24(y-3)=y+20

or,23y=20+3*24

or,23y=92

∴y=4

required number=(y-3)/y

                            =(4-3)/4

                           =1/4

so required number is 1/4

Answer 2

Answer:

Since we are given that e numerator of a rational number is less than its denominator by 3. Now, the numerator becomes 3 times and the denominator is increased by 20, the new number become 1/8