SOLUTION: A tap can fill the tank in 16 minutes and another can empty in 8 minutes.If the tank is already half full and both taps are opened togather, the tank will be? A. Fill in 12 min b

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: A tap can fill the tank in 16 minutes and another can empty in 8 minutes.If the tank is already half full and both taps are opened togather, the tank will be? A. Fill in 12 min b      Log On


   

Question 979226: A tap can fill the tank in 16 minutes and another can empty in 8 minutes.If the tank is already half full and both taps are opened togather, the tank will be?
A. Fill in 12 min
b.empty in 12 min
c.fill in 8 min
d.empty in 8 min
e.none
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
You can immediately reject A, C, and possibly....?
Best to actually analyze and calculate the result.

Tank is at 1%2F2.
Both taps together will empty the tank, rate 1%2F16-1%2F8=1%2F16-2%2F16=-1%2F16.

Take out half the tank quantity will be 8 minutes.


%28-1%2F16%29t=1%2F2