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If an object travels 100 feet in 2 seconds, what is the object's appro
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13 Oct 2022, 10:31
13 Oct 2022, 10:31
Expert Reply
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Question Stats:
87% (01:46) correct
12% (02:34) wrong based on 8 sessions
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If an object travels 100 feet in 2 seconds, what is the object's approximate speed in miles per hour? (Note: 1 mile = 5280 feet)
(A) 3.4
(B) 3.8
(C) 34
(D) 38
(E) 344
(A) 3.4
(B) 3.8
(C) 34
(D) 38
(E) 344
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022) - Gain 20 Kudos & Get FREE Access to GRE Prep Club TESTS
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GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
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GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2508
Given Kudos: 1053
GPA: 3.39
Re: If an object travels 100 feet in 2 seconds, what is the object's appro
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17 Oct 2022, 01:02
17 Oct 2022, 01:02
1
Expert Reply
Conversion questions are best dealt using a one step approach.
Let me illustrate: Let's say we want to convert a speed of 100 miles/hour to feet/sec.
Speed = 100 miles/1 hour = (100 x 5280 feet)/(1 x 3600 sec)= 146.67 feet/sec
So, simply convert the units to what you want along with the conversion factor.
Let's take your question now.
If an object travels 100 feet in 2 seconds, what is the object’s approximate speed in miles per hour? (Note: 1 mile = 5280 feet)
Speed = 100 feet/2 sec = (100×1/5280 miles)/(2×1/3600 hour) = 5x3600 miles/528 hr = 34 miles/hr
Note: Since 1 mile = 5280 feet, hence here to convert we say 1 foot = 1/5280 miles.
Answer: C
Let me illustrate: Let's say we want to convert a speed of 100 miles/hour to feet/sec.
Speed = 100 miles/1 hour = (100 x 5280 feet)/(1 x 3600 sec)= 146.67 feet/sec
So, simply convert the units to what you want along with the conversion factor.
Let's take your question now.
If an object travels 100 feet in 2 seconds, what is the object’s approximate speed in miles per hour? (Note: 1 mile = 5280 feet)
Speed = 100 feet/2 sec = (100×1/5280 miles)/(2×1/3600 hour) = 5x3600 miles/528 hr = 34 miles/hr
Note: Since 1 mile = 5280 feet, hence here to convert we say 1 foot = 1/5280 miles.
Answer: C
gmatclubot
Re: If an object travels 100 feet in 2 seconds, what is the object's appro [#permalink]
17 Oct 2022, 01:02
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