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# A car got 33 miles per gallon using gasoline that cost $2.95  Question banks Downloads My Bookmarks Reviews Important topics Author Message TAGS: Moderator Joined: 18 Apr 2015 Posts: 4914 Followers: 74 Kudos [?]: 978 [0], given: 4499 A car got 33 miles per gallon using gasoline that cost$2.95 [#permalink]  04 Jan 2017, 08:24
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Question Stats:

95% (00:23) correct 4% (00:04) wrong based on 23 sessions

A car got 33 miles per gallon using gasoline that cost $2.95 per gallon. Approximately what was the cost, in dollars, of the gasoline used in driving the car 350 miles? (A)$10
(B) $20 (C)$30
(D) $40 (E)$50
[Reveal] Spoiler: OA

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Re: A car got 33 miles per gallon using gasoline that cost $2.95 [#permalink] 08 Jan 2017, 09:17 1 This post received KUDOS Expert's post Explanation Scanning the answer choices indicates that you can do at least some estimation and still answer confidently. The car used $$\frac{350}{33}$$ gallons of gasoline, so the cost was $$(\frac{350}{33}) \times 2.95 dollars$$. You can estimate the product $$(\frac{350}{33}) \times 2.9$$ by estimating $$\frac{350}{33}$$ a little low, 10, and estimating 2.95 a little high, 3, to get approximately $$10 \times 3 = 30$$ dollars. You can also use the calculator to compute a more exact answer and then round the answer to the nearest 10 dollars, as suggested by the answer choices. The calculator yields the decimal $$31.287....$$ . which rounds to 30 dollars. Thus, the correct answer is Choice C,$30.
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Re: A car got 33 miles per gallon using gasoline that cost $2.95 [#permalink] 16 Jan 2017, 19:58 (E)$50
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Re: A car got 33 miles per gallon using gasoline that cost $2.95 [#permalink] 29 Apr 2018, 15:59 1 This post received KUDOS 31.2 Manager Joined: 26 Jan 2018 Posts: 172 Followers: 0 Kudos [?]: 104 [1] , given: 3 Re: A car got 33 miles per gallon using gasoline that cost$2.95 [#permalink]  04 May 2018, 04:49
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As it asks for approximation, 3 $drives 33 miles.. 30$ drives 330 miles which is the closest option.