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shahdevine
- Master | Next Rank: 500 Posts
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- Joined: Sun May 18, 2008 2:47 am
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if x-y>10, is x-y>x+y?
1) x=8
2)y=-20
OA is d
is there a way to add inequalities and figure this out faster.
I went with b because y is the unknown that's affected by sign changes, so since in statement 2 we know what the exact sign of y is, it is sufficient. But with statement one you have
8-y>10 --> is 8-y>8+y? doesn't this again depend on the sign y is? please advise. thx
s dizzle
1) x=8
2)y=-20
OA is d
is there a way to add inequalities and figure this out faster.
I went with b because y is the unknown that's affected by sign changes, so since in statement 2 we know what the exact sign of y is, it is sufficient. But with statement one you have
8-y>10 --> is 8-y>8+y? doesn't this again depend on the sign y is? please advise. thx
s dizzle
