The daytime telephone rate between two cities is 60 cents for the first 3 minutes and \(c\) cents for each additional

[M7MBA]

The daytime telephone rate between two cities is 60 cents for the first 3 minutes and \(c\) cents for each additional minute. The total charge is reduced 60 percent on calls made after 10:00 P.M. The cost, in dollars, of a 35-minute call made at 10:30 P.M. between these two cities is:

(A) \(0.4(0.60) + 35c\)
(B) \(0.4(0.60 + 0.32c)\)
(C) \(0.4(0.60 + 9c)\)
(D) \(0.6(0.60 + 32c)\)
(E) \(0.6(0.60 + 0.35c)\)

[spoiler]OA=B[/spoiler]

Source: Veritas Prep

[Jay@ManhattanReview]

The daytime telephone rate between two cities is 60 cents for the first 3 minutes and \(c\) cents for each additional minute. The total charge is reduced 60 percent on calls made after 10:00 P.M. The cost, in dollars, of a 35-minute call made at 10:30 P.M. between these two cities is:

(A) \(0.4(0.60) + 35c\)
(B) \(0.4(0.60 + 0.32c)\)
(C) \(0.4(0.60 + 9c)\)
(D) \(0.6(0.60 + 32c)\)
(E) \(0.6(0.60 + 0.35c)\)

[spoiler]OA=B[/spoiler]

Source: Veritas Prep

Since the total charge is reduced by 60 percent on calls made after 10:00 P.M, the total charges are 40% of total charges in the daytime.

Total charges at 10:30 am = 40% of [60 /100 + (35 – 3)*c/100] dollars = 0.4(0.60 + 0.32c) dollars

The correct answer: B

Hope this helps!

-Jay
_________________
Manhattan Review GMAT Prep

Locations: Manhattan Review Chennai | Hyderabad | GRE Prep New Delhi | Tarnaka GRE Coaching | and many more...

Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.

[Scott@TargetTestPrep]

The daytime telephone rate between two cities is 60 cents for the first 3 minutes and \(c\) cents for each additional minute. The total charge is reduced 60 percent on calls made after 10:00 P.M. The cost, in dollars, of a 35-minute call made at 10:30 P.M. between these two cities is:

(A) \(0.4(0.60) + 35c\)
(B) \(0.4(0.60 + 0.32c)\)
(C) \(0.4(0.60 + 9c)\)
(D) \(0.6(0.60 + 32c)\)
(E) \(0.6(0.60 + 0.35c)\)

[spoiler]OA=B[/spoiler]

Source: Veritas Prep

The cost of a 35-minute call at 10:30 pm, in dollars, is:

0.4(60/100 + 32 * c/100)

0.4(0.6 + 0.32c)

Answer: B