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A container of milk costs $60. If the container were to hold

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Senior Manager
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Joined: 29 Nov 2018
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A container of milk costs $60. If the container were to hold  [#permalink]

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New post 19 Dec 2018, 02:21
4
3
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

64% (02:29) correct 36% (02:39) wrong based on 59 sessions

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A container of milk costs $60. If the container were to hold an additional liter of milk and if each liter were to cost $3 less, the total cost will remain unchanged. How many liters of milk does the container hold?

A. 5

B. 4

C.2

D.10

E.6

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Re: A container of milk costs $60. If the container were to hold  [#permalink]

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New post 19 Dec 2018, 03:55
1
Let x be litres and d be cost

Eq 1 : xd = 60
Eq 2 : (x+1)(d-30) =60

Solving for x using Eq 1 and 2 : X =4;

Answer: B) 4
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Re: A container of milk costs $60. If the container were to hold  [#permalink]

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New post 19 Dec 2018, 07:17
cfc198 wrote:
A container of milk costs $60. If the container were to hold an additional liter of milk and if each liter were to cost $3 less, the total cost will remain unchanged. How many liters of milk does the container hold?

A. 5

B. 4

C.2

D.10

E.6

If you liked the question, please do hit the kudos button. :)



You can use the options here:

Note that the total cost must remain $60. Options give the number of litres so 60 has to be divisible by it.
When the number of its becomes 1 extra, 60 should again be divisible by it.

Check (A): 5 is divisible by 60 and so is 6.
5*12 = 60, but 6*9 = 54

Check (B): 4 is divisible by 60 and so is 5
4*15 = 60, and 5*12 = 60 too
Matches

Answer (B)
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Re: A container of milk costs $60. If the container were to hold   [#permalink] 19 Dec 2018, 07:17
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