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In the figure, AOB is a straight line. What is the average of the four

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Math Expert
Joined: 02 Sep 2009
Posts: 53066
In the figure, AOB is a straight line. What is the average of the four  [#permalink]

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09 Oct 2018, 00:12
00:00

Difficulty:

15% (low)

Question Stats:

92% (00:37) correct 8% (00:16) wrong based on 14 sessions

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In the figure, AOB is a straight line. What is the average of the four numbers a, b, c, d ?

A. 45

B. $$\frac{360}{7}$$

C. 60

D. 90

E. 120

Attachment:

lines (2).jpg [ 18.04 KiB | Viewed 196 times ]

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Intern
Joined: 15 Dec 2012
Posts: 19
Re: In the figure, AOB is a straight line. What is the average of the four  [#permalink]

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09 Oct 2018, 03:32
a+b+c+d=180 degree
(a+b+c+d)/4=45
Option A
Re: In the figure, AOB is a straight line. What is the average of the four   [#permalink] 09 Oct 2018, 03:32
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