Question

the product of two rational number is 5/12.if one of them is 5/4.find the other

Answer 1

(5/12)/(5/4)=(5/12)*(4/5)=(20/60)=1/3
So the other rational number is 1/3.
Hope it helps!

Answer 2

let x and y be the number from which 5/4 is multiplied
therefore
5x/4y=5/12
5x=5
x=5/5
x=1
4y=12
y=12/4
y=3
5/4 × 1/3 = 5/12