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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## Phone plan A charges$1.25 for the first minute and $0.15 tagged by: AAPL ##### This topic has 2 expert replies and 0 member replies ### Top Member ## Phone plan A charges$1.25 for the first minute and $0.15 ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult Manhattan Prep Phone plan A charges$1.25 for the first minute and $0.15 for every minute thereafter. Phone plan B charges a$0.90 connection fee and $0.20 per minute. Which of the following equations could be used to find the length, in minutes, of a phone call that costs the same under either plan? A. 1.25 + 0.15x = 0.90x + 0.20 B. 1.25 + 0.15x = 0.90 + 0.20x C. 1.25 + 0.15(x - 1) = 0.90 + 0.20x D. 1.25 + 0.15(x - 1) = 0.90 + 0.20(x - 1) E. 1.25 + 0.15x + 0.90x + 0.20 = x OA C ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12999 messages Followed by: 1250 members Upvotes: 5254 GMAT Score: 770 AAPL wrote: Manhattan Prep Phone plan A charges$1.25 for the first minute and $0.15 for every minute thereafter. Phone plan B charges a$0.90 connection fee and $0.20 per minute. Which of the following equations could be used to find the length, in minutes, of a phone call that costs the same under either plan? A. 1.25 + 0.15x = 0.90x + 0.20 B. 1.25 + 0.15x = 0.90 + 0.20x C. 1.25 + 0.15(x - 1) = 0.90 + 0.20x D. 1.25 + 0.15(x - 1) = 0.90 + 0.20(x - 1) E. 1.25 + 0.15x + 0.90x + 0.20 = x OA C Phone plan A charges$1.25 for the first minute and $0.15 for every minute thereafter. Let x = total duration of phone call (in minutes) So, the cost of an x-minute call =$1.25 + ($0.15)(x - 1) ASIDE: I created the expression ($0.15)(x - 1) because we pay $1.25 for the FIRST minute. So, if x = the TOTAL call time, then x-1 = the time spent AFTER the first minute) Phone plan B charges a$0.90 connection fee and $0.20 per minute. Let x = total duration of phone call (in minutes) So, the cost of an x-minute call =$0.90 + ($0.20)(x) Which of the following equations could be used to find the length, in minutes, of a phone call that costs the same under either plan? We need:$1.25 + ($0.15)(x - 1) =$0.90 + ($0.20)(x) Answer: C Cheers, Brent _________________ Brent Hanneson â€“ Creator of GMATPrepNow.com Use my video course along with Sign up for free Question of the Day emails And check out all of these free resources GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMATâ€™s FREE 60-Day Study Guide and reach your target score in 2 months! ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2852 messages Followed by: 18 members Upvotes: 43 AAPL wrote: Manhattan Prep Phone plan A charges$1.25 for the first minute and $0.15 for every minute thereafter. Phone plan B charges a$0.90 connection fee and $0.20 per minute. Which of the following equations could be used to find the length, in minutes, of a phone call that costs the same under either plan? A. 1.25 + 0.15x = 0.90x + 0.20 B. 1.25 + 0.15x = 0.90 + 0.20x C. 1.25 + 0.15(x - 1) = 0.90 + 0.20x D. 1.25 + 0.15(x - 1) = 0.90 + 0.20(x - 1) E. 1.25 + 0.15x + 0.90x + 0.20 = x OA C We can create the equation in which x = the number of minutes that equates the charges of the two plans. Plan A charges$1.25 for the first minute and $0.15 for the remaining (x - 1) minutes. Plan B charges a$0.90 fee and $0.20 for all x minutes of the call. Thus, the equation that equates the charges for the two plans is: 1.25 + 0.15(x - 1) = 0.9 + 0.2x Answer: C _________________ Scott Woodbury-Stewart Founder and CEO scott@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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