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Last year, a magazine charged a $50 subscription fee. This

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4749
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1656 [0], given: 396

CAT Tests
Last year, a magazine charged a $50 subscription fee. This [#permalink] New post 27 May 2018, 03:57
Expert's post
00:00

Question Stats:

100% (00:21) correct 0% (00:00) wrong based on 2 sessions
Last year, a magazine charged a $50 subscription fee. This year, the price will be increased by $10. If the magazine could lose 4 subscribers this year and still collect the same revenue as it did last year, how many subscribers did the magazine have last year?

(A) 20
(B) 21
(C) 22
(D) 23
(E) 24
[Reveal] Spoiler: OA

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Sandy
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4749
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1656 [0], given: 396

CAT Tests
Re: Last year, a magazine charged a $50 subscription fee. This [#permalink] New post 27 May 2018, 13:13
Expert's post
Explanation

Assign the variable s for the number of subscribers last year:

Last year:
$50 per subscription
\(s\) subscribers

This year:
$60 per subscription
\(s - 4\) subscribers

The question states that the magazine “could” lose 4 subscribers and that the magazine would then collect the same revenue as last year—don’t let the “could” throw you off. Calculate using this hypothetical situation:

\(50s = 60(s - 4)\)

\(50s = 60s - 240\)

\(-10s = -240\)

\(s = 24\)

Hence option E is correct!
_________________

Sandy
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Re: Last year, a magazine charged a $50 subscription fee. This   [#permalink] 27 May 2018, 13:13
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