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# If a + b = 100, what is y + z?

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Math Expert
Joined: 02 Sep 2009
Posts: 52905
If a + b = 100, what is y + z?  [#permalink]

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17 Jan 2019, 23:40
00:00

Difficulty:

15% (low)

Question Stats:

86% (00:30) correct 14% (00:35) wrong based on 28 sessions

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If a + b = 100, what is y + z?

A 60
B 80
C 100
D 140
E It cannot be determined from the given information.

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Manager
Joined: 30 Oct 2018
Posts: 59
Re: If a + b = 100, what is y + z?  [#permalink]

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18 Jan 2019, 00:01
a+b+c = 180
a+b = 100 given
-> 100+c =180
c= 80

Now we have to find y+z
so, y+z+c =180
=> y+z = 180-80 = 100 (C)
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Re: If a + b = 100, what is y + z?   [#permalink] 18 Jan 2019, 00:01
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