.
The product of two positive numbers is.     5/6 and their quotient is 15/8. Calculate the numbers.
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Let "x" and y" be the two numbers.
We have
xy = 
,       (1)   and
 = 
.      (2)
Multiply (1) and (2) (both sdes). You will get
 = 
 = 
.
Hence,  x = +/- 
.
Next, divide (1) by (2) (both sides). You will get
 = 
 : 
 = 
 = 
.
Hence, y = +/- 
.
Answer. There are two solutions: (x,y) = (
,
)  and  (x,y) = (
,
).
        // We should exclude the second solution, since the numbers are negative.