Is X + Y < 1?

[mynameisdong]

Hi all,

here's the question -

Is X + Y < 1?

1) X < 8/9

2) Y < 1/8

I thought the answer is C but apparently the correct answer is E.

Can someone kindly explain? I feel like I'm missing something here, or just not seeing it.

Thanks!

[ugenderr]

Hi all,

here's the question -

Is X + Y < 1?

1) X < 8/9

2) Y < 1/8

I thought the answer is C but apparently the correct answer is E.

Can someone kindly explain? I feel like I'm missing something here, or just not seeing it.

Thanks!

Statement 1 alone is not sufficient since we dont know anything about y so choice A is ruled out.

Statement 2 alone is not sufficient since we dont know anything about x so choice B is ruled out.

And choice D is also ruled out since neither A nor B sufficient.

so now it's either C or E.

let's add the inequalities

x + y < (8/9 + 1/8) ==> x + y < 73/72 ==> x + y < 1.01...

so there is possibility for x+y to have 1 or little above 1, and it also can have less than 1.

so you really can't tell ...

Ans E.

[RonPurewal]

Hi all,

here's the question -

Is X + Y < 1?

1) X < 8/9

2) Y < 1/8

I thought the answer is C but apparently the correct answer is E.

Can someone kindly explain? I feel like I'm missing something here, or just not seeing it.

Thanks!

Statement 1 alone is not sufficient since we dont know anything about y so choice A is ruled out.

Statement 2 alone is not sufficient since we dont know anything about x so choice B is ruled out.

And choice D is also ruled out since neither A nor B sufficient.

so now it's either C or E.

let's add the inequalities

x + y < (8/9 + 1/8) ==> x + y < 73/72 ==> x + y < 1.01...

so there is possibility for x+y to have 1 or little above 1, and it also can have less than 1.

so you really can't tell ...

Ans E.

nicely explained.