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Variables

Expert replies
by rahul.s » Fri Jan 22, 2010 4:17 am
A certain liquid leaks out of a container at the rate of k liters for every x hours. If the liquid costs $6 per liter, what is the cost, in dollars, of the amount of the liquid that will leak out in y hours?

A) ky / 6x
B) 6x / ky
C) 6k / xy
D) 6ky / x
E) 6xy / k

Will post the OA after some discussion
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Source: — Problem Solving |

by sanju09 » Fri Jan 22, 2010 4:40 am
Leakage (in liters) in x hours = k

∴ Leakage (in liters) in 1 hour = k/x

∴ Leakage (in liters) in y hours = k y/x, which @$6 a liter would cost [spoiler]6 k y/x[/spoiler] of dollar.

[spoiler]D[/spoiler] dude
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by rahul.s » Fri Jan 22, 2010 7:16 am
thanks mate!

i got D as well, but the OA was C, so i got a lil confused. juste needed some reassurance :)
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