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January 31, 2015

January 31, 2015

Posted by **Katherine** on Tuesday, November 30, 2010 at 5:15pm.

(A) what will be the depth of water in the tank after both taps are turned on for 6 minutes?

(B) if water leaks frome the tank at a rate of 2L per minute for 6 minutes, what will be the depth of water in the tank?

- math -
**Reiny**, Tuesday, November 30, 2010 at 5:41pmA)

in 6 minutes the first tap will fill (12)(6) or 72 L

in the same 6 minutes the 2nd tap will fill (9)(6) or 54 L

for a total of 126 L

This is equal to 126 000 cm^3 (ahh, the beauty of the metric system)

volume of tank = area of base x height

= 2400h

= 126000

h = 52.5 cm

B)

During our 6 minutes we lost (2)(6) or 12 L

or 12000 cm^3

so 2400h = 126000 - 12000

h = 47.5 cm

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