SOLUTION: a tank has 500 liters of oj in it is being filled from another tank at a rate of 20 liters per minute. The second tank has 740 liters in it. After how many seconds will the levels

Algebra ->  Equations -> SOLUTION: a tank has 500 liters of oj in it is being filled from another tank at a rate of 20 liters per minute. The second tank has 740 liters in it. After how many seconds will the levels       Log On


   

Question 364780: a tank has 500 liters of oj in it is being filled from another tank at a rate of 20 liters per minute. The second tank has 740 liters in it. After how many seconds will the levels of the oj in both tanks be the same.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = the liters of oj removed from the 2nd tank
and added to the 1st tank
given:
500+%2B+x+=+740+-+x
minutes to move x liters from 2nd to 1st tank:
x%2F20
-------------------
2x+=+740+-+500
2x+=+240
x+=+120
minutes to move x liters from 2nd to 1st tank:
x%2F20
120%2F20+=+6 min
6 min x 60 sec/min = 360 sec