'Find two positive rational
numbers, whose sum is 5/3
If the bigger number is
divided by the smaller
number it gives 9'.
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x = 1/6 and y = 3/2
Let the two positive numbers be x and y,(and let's say that y is greater than x)
Sum is 5/3
x + y = 5/3
Division is 9
y/x = 9
The second equation gives us
y = 9x
We go back to the first equation and substitute this value for y (we put 9x in the place of y)
x + y = 5/3
becomes
x + 9x = 5/3
10x = 5/3
x = 5/30
x = 1/6
Then,
y = 9x = 9 x 1/6
y = 3/2
Verification:
x + y = 1/6 + 3/2 = 1+9/6 = 10/6 = 5/3.
Therefore, the two positive numbers are 1/6 and 3/2.
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