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If a certain city is losing 12 percent of its daily water supply each

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If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 16 Dec 2014, 05:24
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A
B
C
D
E

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  5% (low)

Question Stats:

91% (00:38) correct 9% (00:51) wrong based on 70 sessions

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Tough and Tricky questions: Word Problems.



If a certain city is losing 12 percent of its daily water supply each day because of water-main breaks, what is the dollar cost to the city per day for this loss?

(1) The city’s daily water supply is 350 million gallons.
(2) The cost to the city for each 12,000 gallons of water lost is $2.

Kudos for a correct solution.

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Re: If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 16 Dec 2014, 05:31
1
We need to know the amount of water loss per day AND the cost per gallon of water loss to calculate the total loss per day. This can be inferred from both the statements together, and NOT by either of them alone.

Hence C
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Re: If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 16 Dec 2014, 23:11
1
Bunuel wrote:

Tough and Tricky questions: Word Problems.



If a certain city is losing 12 percent of its daily water supply each day because of water-main breaks, what is the dollar cost to the city per day for this loss?

(1) The city’s daily water supply is 350 million gallons.
(2) The cost to the city for each 12,000 gallons of water lost is $2.

Kudos for a correct solution.



Need to find the cost for 12% of the water loss
1: Insufficient - WE can find the amount of water loss but not cost
2: In sufficient - Cost of gallon of water can be calculated but not the loss of water

combining both we can find the total cost for lost water

ANS C
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Re: If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 26 Dec 2014, 10:11
Bunuel wrote:

Tough and Tricky questions: Word Problems.



If a certain city is losing 12 percent of its daily water supply each day because of water-main breaks, what is the dollar cost to the city per day for this loss?

(1) The city’s daily water supply is 350 million gallons.
(2) The cost to the city for each 12,000 gallons of water lost is $2.

Kudos for a correct solution.


The correct answer is C.
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Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 01 Jan 2015, 22:25
I also vote for C. It really kinda tough and tricky question but not much :)
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Re: If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 06 Jan 2017, 10:09
Option 1 - Not sufficient. No info about cost
Daily Supply = 350 gallons
Daily Water Lost = (.12)350 = 42 gallons
Option 2 - Not sufficient. We don't know how much days' supply sums up to this. Weekly? Monthly?
Cost for 12000 gallons = $2
Cost for 1 gallon = $(1/6000)

Together
Total loss = Amount lost * Cost of each gallon
= 42 * 1/6000
= .007 $ per day
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Re: If a certain city is losing 12 percent of its daily water supply each  [#permalink]

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New post 05 Aug 2018, 04:51
Why is it under tough and tricky questions? It seems really a piece of cake
Re: If a certain city is losing 12 percent of its daily water supply each &nbs [#permalink] 05 Aug 2018, 04:51
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