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by sainagalla » Wed Jul 20, 2011 10:29 pm
Soda concentrate is being added into a soda-making machine in a manufacturing plant. The concentrate is added at a constant rate. At the same time prepared soda is being pumped out of the machine at a constant rate. What is the amount of soda being pumped out per minute?

(1) The soda machine has a capacity to hold 1000 gallons of water.

(2) 25 gallons of concentrate are added every minute and the total volume of liquid in the machine is reduced by 75 gallons every minute.
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by Anurag@Gurome » Wed Jul 20, 2011 11:31 pm
sainagalla wrote:Soda concentrate is being added into a soda-making machine in a manufacturing plant. The concentrate is added at a constant rate. At the same time prepared soda is being pumped out of the machine at a constant rate. What is the amount of soda being pumped out per minute?

(1) The soda machine has a capacity to hold 1000 gallons of water.

(2) 25 gallons of concentrate are added every minute and the total volume of liquid in the machine is reduced by 75 gallons every minute.
Statement 1: No necessary information --> Not sufficient

Statement 2: Inlet rate = 25 gallons/min and volume decreasing rate = 75 gallons/min
Now, Outlet - Inlet = Volume decreased
---> Outlet = Inlet + Volume decreased = (25 + 75) gallons

Hence, (25 + 75) = 100 gallons of soda is being pumped out per minute.

Sufficient

The correct answer is B.
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by amit2k9 » Thu Jul 21, 2011 2:57 am
b. let B be the pumping out rate.
hence,

B-25 = 75 thus B =100.
b is sufficient.
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by sainagalla » Thu Jul 21, 2011 7:11 am
Anurag@Gurome wrote:
sainagalla wrote:Soda concentrate is being added into a soda-making machine in a manufacturing plant. The concentrate is added at a constant rate. At the same time prepared soda is being pumped out of the machine at a constant rate. What is the amount of soda being pumped out per minute?

(1) The soda machine has a capacity to hold 1000 gallons of water.

(2) 25 gallons of concentrate are added every minute and the total volume of liquid in the machine is reduced by 75 gallons every minute.
Statement 1: No necessary information --> Not sufficient

Statement 2: Inlet rate = 25 gallons/min and volume decreasing rate = 75 gallons/min
Now, Outlet - Inlet = Volume decreased
---> Outlet = Inlet + Volume decreased = (25 + 75) gallons

Hence, (25 + 75) = 100 gallons of soda is being pumped out per minute.

Sufficient

The correct answer is B.
anurag,

Can you clarify the below doubt?

1) Are soda concentrate and prepared soda same ? or soda concentrate is added to liquid to prepare soda ?
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