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655-705 (Hard)|   Algebra|      
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Bunuel
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Does ay = –5 – by? (1) a = b (2) a + b = y 05 Sep 2017, 23:26
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

55% (hard)

Question Stats:

47% (01:23) correct 53% (01:29) wrong based on 60 sessions

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Does ay = –5 – by?

(1) a = b
(2) a + b = y
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B
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Does ay = –5 – by? (1) a = b (2) a + b = y Updated on: 06 Sep 2017, 05:40
Originally posted by Luckisnoexcuse on 06 Sep 2017, 00:38.
Last edited by Luckisnoexcuse on 06 Sep 2017, 05:40, edited 1 time in total.
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Bunuel
Does ay = –5 – by?

(1) a = b
(2) a + b = y
Show more

Does ay + by = -5

(1) a = b but no information abt y
not sufficient

(2) a+b = y
ay + by
y^2..only positive value and hence cannot equal -5
sufficient
B
on combining no values of a, b, y given
PS: Second attempt :(
B
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Does ay = –5 – by? (1) a = b (2) a + b = y 06 Sep 2017, 05:18
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Luckisnoexcuse
Bunuel
Does ay = –5 – by?












(1) a = b
(2) a + b = y

Does ay + by = -5

(1) a = b but no information abt y
not sufficient

(2) a+b = y
ay + by
y^2
no information abt y..not sufficient on combining no values of a, b, y given

E
Show more

Y^2 will always be positive and cant be equal to -5.
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Does ay = –5 – by? (1) a = b (2) a + b = y 06 Sep 2017, 05:21
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Deepak0311
Luckisnoexcuse
Bunuel
Does ay = –5 – by?












(1) a = b
(2) a + b = y

Does ay + by = -5

(1) a = b but no information abt y
not sufficient

(2) a+b = y
ay + by
y^2
no information abt y..not sufficient on combining no values of a, b, y given

E

Y^2 will always be positive and cant be equal to -5.
Show more

Ha Ha...that'a another way to look at it :thumbup:
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Does ay = –5 – by? (1) a = b (2) a + b = y 06 Sep 2017, 05:32
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Bunuel
Does ay = –5 – by?

(1) a = b
(2) a + b = y
Show more
Rephrase question
Is ay+by=-5
Is y(a+b)= -5

St:1 No info about y. So NS
St :2 a+b=y, (multiplying Y both side)
y(a+b)=y^2
From above y(a+b) cant be negative.
So answer is confirmed No. Hence sufficient.
B
Luckisnoexcuse
Deepak0311
Luckisnoexcuse
[quote="Bunuel"]Does ay = –5 – by?












(1) a = b
(2) a + b = y

Does ay + by = -5

(1) a = b but no information abt y
not sufficient

(2) a+b = y
ay + by
y^2
no information abt y..not sufficient on combining no values of a, b, y given

E

Y^2 will always be positive and cant be equal to -5.

Ha Ha...that'a another way to look at it [/quote]


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Does ay = –5 – by? (1) a = b (2) a + b = y 30 Aug 2022, 09:17
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