Thursday

January 29, 2015

January 29, 2015

Posted by **carolyn** on Sunday, February 12, 2012 at 4:51pm.

- algebra -
**Damon**, Sunday, February 12, 2012 at 5:26pmin flow rate Q1 = 1 tank / 30 seconds

out flow rate = Q2

Q2 - Q1 = 1 tank/6 seconds

Q2 - 1/30 = 1/6

Q2 = 5/30 + 1/30 = 6/30 = 1/5 = 1 tank/5 seconds

so

5 seconds

- algebra -
**Reiny**, Sunday, February 12, 2012 at 5:35pmlet the tank hold 1 unit of volume

let the rate of water flowing in be y units/sec

let the water flowing out be x units / sec

When drain is open (water going in and out at the same time)

6(x-y) = 1

x - y = 1/6

drain closed: 30y = 1

y = 1/30

plug back into x-y = 1/6

x - (1/30) = 1/6

x = 1/5

only drain open:

t(1/5) = 1

t = 5 sec

With the drain only,

it would take 5 seconds to empty the tank

**Answer this Question**

**Related Questions**

Math - "A tank holds 1000L of water, which takes an hour to drain from the ...

maths - a hemispherical tank full of water is emptied by a pipe at the rate of ...

algebra - Brandon has a 55-gallon fish tank. He estimates he can drain the tank ...

mat 116 - two large storage tanks, T and W contain water. T starts losing at the...

math - Water is flowing at a rate of 10 m3/s into the cylindrical tank shown ...

math - Water is flowing at the rate of 15km/hr. Through a cylindrical pipe of ...

math - A water system of 2 in.(inside diameter) pipe, having a length of 1/4 ...

MATH - Brandon has a 55-gallon fish tank. He estimates he can drain the tank at ...

math - Brandon has a 55-gallon fish tank. He estimates he can drain the tank at ...

CALCULUS - PLEASE HELP - Water is flowing at a rate of 50 cubic meters per ...