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# A telephone company offers a special service to customers

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VP
Joined: 26 Apr 2004
Posts: 1225
Location: Taiwan
Followers: 2

Kudos [?]: 163 [0], given: 0

A telephone company offers a special service to customers [#permalink]  06 Aug 2004, 07:58
00:00

Difficulty:

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Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
A telephone company offers a special service to customers who make long-distance calls. For an additional monthly charge of $8, all long-distance charges in excess of$16 for a month are reduced by 50 percent. If a customer has long-distance charges of $48 for one month without the special service, how much would the customer have saved by using the special service? (A)$0

(B) $8 (C)$16

(D)$20 (E)$32
VP
Joined: 26 Apr 2004
Posts: 1225
Location: Taiwan
Followers: 2

Kudos [?]: 163 [0], given: 0

Excuse me.

I supposed

8 + 16 + (48-16) * 0.5 = 40

48 - 40 = 8

Is this right?
Director
Joined: 16 Jun 2004
Posts: 893
Followers: 2

Kudos [?]: 19 [0], given: 0

chunjuwu,
You are right.

it has to be

8 + 16 + (48-16) * 0.5 = 40

48-40 = 8.

Absolutely right.
Manager
Joined: 28 Jul 2004
Posts: 182
Followers: 1

Kudos [?]: 6 [0], given: 0

48-16+8 = $8 I know this is the worst way to explain a math problem. But since you guys have already explained it pretty well... do i need to --- lazy fella Director Joined: 20 Jul 2004 Posts: 593 Followers: 1 Kudos [?]: 47 [0], given: 0 [#permalink] 06 Aug 2004, 16:28 chunjuwu wrote: Excuse me. I supposed 8 + 16 + (48-16) * 0.5 = 40 48 - 40 = 8 Is this right? Both ways are right chunjuwu. 1) What you did was: Total the guy actually spent = 48 Total the guy should have spent = extra charge + full amt upto 16 + 1/2 (rest) = 8 + 16 + (48-16) * 0.5 = 40 Prospective savings = 48 - 40 = 8 2) What I did was: Just calculating the savings only (or rather company's expenditure only): Company has to pay the 1/2 of rest, but it gets$8 from the guy
So guys savings = company's expenditure = (48-16)/2 - 8 = 8

This method probably saves just a couple of seconds...
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