Liters of Water Wasted in April

geekily

Junior Member
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Jan 24, 2007
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I'm re-working the problems from my tests to prepare for the final. This is one that I originally got wrong and though I now understand the concept, I still can't seem to get the right answer:

If a faucet is dripping at the rate of 15 drops per minute and there are 20 drops in a cubic centimeter, how many liters of water are wasted in the month of April?

30 days x 24 hr x 60 min = 43,200 min in April

43200 min x 15 drops = 64,8000 drops / 20 drops = 32,400 in a cubic centimeter

My teacher wrote on my paper that 1 ml = 1 cubic centimeter, so I have 32,400 ml. 1000 ml = 1 L, so moving the decimal over 3 places gives me 32.4 liters. My teacher wrote that the correct answer is 3.4 L, though. What am I doing wrong? Thanks for your help!
 
You did the calculations exactly correctly. The answer to the exercise, as posted, is indeed "32.4 liters". :D

At a guess, the solution manual has a typo: the "2" was omitted when the manual was type-set, changing "32.4 L" to "3.4 L". And your educator hasn't done the math herself. :roll:

Eliz.
 
Haha, okay, thanks so much! I was driving myself crazy trying to figure out what I did. :p
 
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