GMAT Data Sufficiency (DS) | Is x+y < 1 (1) x < 8/9 (2) y < 1/8

\(x+y < 1\)

(1)\(x < \frac{8}{9}\)

As we don't know the value of y, this equation is not sufficient=====> (1) NOT SUFFICIENT

(2)\(y < \frac{1}{8}\)

As we don't know the value of x, this equation is not sufficient=====> (2) NOT SUFFICIENT

Combining (1) & (2)

Lets solve x first

\(x < \frac{8}{9}\)

\(x < 8 * 0.11\)
\(x < 0.88\)
Lets solve for y

\(y < \frac{1}{8}\)
\(x < 0.125\)
Adding\(x + y = 0.88 + 0.125\)

We get\(x+y = 1.005\)

As the value of\(x + y\) can take the highest value as\(1.004\) ans any value lower than that
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