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

Question

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.

omegacube · Answer

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

Hence C

g106 · Answer

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

Glen123 · Answer

I also vote for C. It really kinda tough and tricky question but not much

love004nit@gmail.com · Answer

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

practica · Answer

I think the right amount is 42 million gallons instead of 42 gallons?

Hovkial · Answer

OFFICIAL GMAT EXPLANATION

In order to solve this problem, the cost of the water and the number of gallons in the daily water supply must be known. Statement (1) gives the daily water supply, which is not sufficient by itself, and statement (2) gives the cost of water, which also is not sufficient by itself. Thus, the answer must be C or E. From both statements together, it can be concluded that the dollar cost for the water lost is (0.12(350,000,000) x $2)/12,000. The best answer is C.

gmatchile1 · Answer

Imagine yourself in the shoes of a mayor of a city, facing a critical dilemma: water pipe breakages are causing your city to lose a significant 12 percent of its daily water supply. When facing this challenge head-on, your task is clear: determine the cost in dollars per day of this loss.

Let's embark on this journey together, step by step.

Statement (1) reveals a fundamental detail: the city's daily water supply amounts to the considerable figure of 350 million gallons. This gives us an idea of the amount of water lost each day, but can we deduce the cost without knowing the unit price?

Enter Statement (2), which reveals that the city incurs a cost of $2 for every 12,000 gallons of water lost. This crucial piece of information sheds light on the price per unit, but can we determine the total cost without knowing the daily amount?

Now, let's weave these threads together. By harmonizing both statements, we possess the complete arsenal necessary to decipher the code. Armed with the knowledge of both the daily amount lost and the cost per unit, we can confidently calculate the total daily cost for the city.

As we navigate through the options, it becomes evident that the answer lies in the fusion of both statements. Individually they may seem inadequate, but together they form a formidable partnership that provides us with the necessary information to unravel the mystery.

So the correct answer is C.

Thus, Claudio Hurtado invites you, as we navigate through this problem, let us harness the power of collaboration and consider every angle with precision. With a strategic mindset and unwavering determination, we will emerge victorious, ready to conquer any challenge that the GMAT presents to us.

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

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Data Sufficiency (DS) Questions

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

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards