Question

Random question I had about global water.
Assume that every person uses 80 gallons of water a day. Also assume there are about 7 billion people in the world, increasing 100,000 people a day. How long until we run out of water in the oceans? There are (roughly) 352,670,000,000,000,000,000 gallons of water in the oceans.
Anyone up for the math?

Answer 1

but babies dont use 80 gallons

Answer 2

On a mathematical standpoint, just say they do :p

Answer 3

So basically this can be modeled by\[352,670,000,000,000,000,000=80(7000000000x+100000y)\]

Answer 4

Wait my bad
Take out the x

Answer 5

y is the number of days
Solve for y

Answer 6

dont you mean run out of fresh water ... people cant drink salt water

Answer 7

You can filter it, last time I checked. If people got desperate enough, I think they would

Answer 8

The level of sarcasm people are using towards this question is hysterical

Answer 9

My guess: 3.52669999E20!

Answer 10

http://www.wolframalpha.com/input/?i=3.5267*10%5E16+%3D+80(7*10%5E9+%2B+100000x)

Answer 11

convert that to years and its about 12 million

Answer 12

Welp, were not having problems then lol, thanks!

Answer 13

haha no there is plenty of water out there if you include the oceans...also obviously that population model will not hold up for 12 million yrs. We are already starting to deal with overpopulation issues

Answer 14

Although keep in mind, converting salt water to fresh water is not a preference problem, it is an expense problem
Getting all water from the oceans and purifying it would probably lead to economic disaster

Answer 15

yep ... so actually humans are probably more likely to become extinct than the oceans running out of water :)