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The average (arithmetic mean) of 5, 25, and 45 is 10 more than the ave
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27 Sep 2022, 02:33
27 Sep 2022, 02:33
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Question Stats:
75% (00:44) correct
25% (01:37) wrong based on 4 sessions
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The average (arithmetic mean) of 5, 25, and 45 is 10 more than the average of 10, 30, and
(A) 5
(B) 15
(C) 25
(D) 35
(E) 45
(A) 5
(B) 15
(C) 25
(D) 35
(E) 45
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GRE Math Essentials (2022)
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GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
The average (arithmetic mean) of 5, 25, and 45 is 10 more than the ave
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27 Sep 2022, 03:32
27 Sep 2022, 03:32
1
Approach-1:
{(5+25+45)/3} - {(10+30+x)/3}=10
x = 5
Answer: A
Approach-2:
{(5+25+45)/3} - {(10+30+x)/3}=10
x = 5
Answer: A
Approach-2:
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Re: The average (arithmetic mean) of 5, 25, and 45 is 10 more than the ave
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27 Sep 2022, 06:59
27 Sep 2022, 06:59
1
The average of 5, 25, and 45 is:
(5 + 25 + 45) / 3 = 75/3 = 25
25 is 10 more than 15, which gives us the average involving our unknown amount:
(10 + 30 + x) / 3 = (40+x)/3 = 15
==> 40+x = 45
==> x = 5
Answer A.
(5 + 25 + 45) / 3 = 75/3 = 25
25 is 10 more than 15, which gives us the average involving our unknown amount:
(10 + 30 + x) / 3 = (40+x)/3 = 15
==> 40+x = 45
==> x = 5
Answer A.
