Ask your own question, for FREE!
Mathematics
OpenStudy (phoenixfire):

When mixing a certain "alcoholic beverage" a barperson starts with a 10 litre solution of 20% alcohol. Into this solution the barperson mixes a 40% mixture at the rate of 1 litre/minute and pours into glasses at the rate of 2 litre/minute. (a) Find a formula for the volume V(t) of the mixture at time t minutes. (b) Find a differential equation that tells the rate of change of the amount of alcohol A(t) at time t minutes. (c) Solve the differential equation and use the initial condition to find a formula for A(t)

OpenStudy (phoenixfire):

For (a) I got \[V(t) = 10 - t\]

OpenStudy (phoenixfire):

I can't figure out (b).... I tried \[{\delta A \over \delta t}=0.2(10-t)+0.4t-2t{A \over {10-t}}\] But I don't know if that's right. Please help.

OpenStudy (turingtest):

oh that language filter, lol

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
Ali11: black lives matter
9 minutes ago 9 Replies 0 Medals
hannaba: 1.06 what is the mystery meaning
9 hours ago 1 Reply 0 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!