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(1)(0.1)+(2)( 0.2)
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20 Dec 2022, 08:22
20 Dec 2022, 08:22
Expert Reply
00:00
Question Stats:
92% (01:33) correct
7% (02:52) wrong based on 27 sessions
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\(\frac{(1)(0.1)+(2)(0.2)+(3)(0.3)+(4)(0.4)}{(1)(0.1)+(\frac{1}{2})(0.2)+(\frac{1}{3})(0.3)+(\frac{1}{4})(0.4)} =\)
(A) 2.5
(B) 3
(C) 7.5
(D) 10
(E) 30
(A) 2.5
(B) 3
(C) 7.5
(D) 10
(E) 30
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Re: (1)(0.1)+(2)( 0.2)
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22 Dec 2022, 06:09
22 Dec 2022, 06:09
1
Expert Reply
Here, apply the PEMDAS rule (first multiplication and then addition) and use the calculator to get the answer.
(1)(0.1)+(2)( 0.2)
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28 Jan 2024, 03:39
28 Jan 2024, 03:39
1
\(\frac{(1)(0.1)+(2)(0.2)+(3)(0.3)+(4)(0.4)}{(1)(0.1)+(\frac{1}{2})(0.2)+(\frac{1}{3})(0.3)+(\frac{1}{4})(0.4)} =\)
Can be rewritten as
\(\dfrac{0.1 + 0.4 + 0.9 + 1.6}{01. + 0.1 + 0.1 + 0.1}\)
based on simple mental arithmetic.
\(\frac{0.1 + 0.4 + 0.9 + 1.6}{01. + 0.1 + 0.1 + 0.1}\) can be further simplified into
\(\dfrac{3.0}{0.4}\)
\(\dfrac{30}{4}\)
\(= 7.5\)
The answer is C
Can be rewritten as
\(\dfrac{0.1 + 0.4 + 0.9 + 1.6}{01. + 0.1 + 0.1 + 0.1}\)
based on simple mental arithmetic.
\(\frac{0.1 + 0.4 + 0.9 + 1.6}{01. + 0.1 + 0.1 + 0.1}\) can be further simplified into
\(\dfrac{3.0}{0.4}\)
\(\dfrac{30}{4}\)
\(= 7.5\)
The answer is C
