An empty tank has a capacity of 55.2 litres.Water flows from a Tap A at 3.6 litres per mimute and 2.4 litres per minute from a Tap B.Tap A was turned on first.Tap B was turned on 2 minutes later.The taps were turned off at the same time when the tank was completely filled without overflowing.How much water flowed from Tap B?
An empty tank has a capacity of 55.2 litres.Water flows from a Tap A at 3.6 litres per mimute and 2.4 litres per minute from a Tap B.Tap A was turned on first.Tap B was turned on 2 minutes later.The taps were turned off at the same time when the tank was completely filled without overflowing.How much water flowed from Tap B?
When B is turned on, A has put 3.6(2) = 7.2 litres of water into the tank. So there remain 55.2 - 7.2 = 48 litres to fill. So we have:
3.6T + 2.4T = 48 where T is the time it takes to fill the rest of the tank .......Simpifying, we have
6T = 48
T = 8 minutes
So, since B was on for 8 minutes, it put 2.4(8) -= 19.2 litres into the tank.
An empty tank has a capacity of 55.2 litres.Water flows from a Tap A at 3.6 litres per mimute and 2.4 litres per minute from a Tap B.Tap A was turned on first.Tap B was turned on 2 minutes later.The taps were turned off at the same time when the tank was completely filled without overflowing.How much water flowed from Tap B ?
The tank after 2 min. has an empty capacity of$$55.2 - \dfrac{3.6\;l}{min}*2\;min=55.2\;l - 7.2\;l=48\;l$$
$$\left(
\dfrac{3.6\;l}{min}+\dfrac{2.4\;l}{min}
\right)
\times t_{min} = 48\;l \quad | \quad t_{min} = \mbox{time Tab B is running}$$
$$t_{min}=\dfrac{48\;l}{3.6\;l+2.4\;l}*min=\dfrac{48\;\not{l}}{6\;\not{l}}*min=8\;min$$
How much water flowed from Tap B ?
$$=\dfrac{2.4\;l}{min}*8\;min=\textcolor[rgb]{1,0,0}{19.2\;l}$$
When B is turned on A has put 3.6(2) = 7.2 litres of water into the tank So there remain 55.2-7.2 = 48 liters to fill.So we have:
3.6T + 2.4T = 48where T is the time it takes to fill the rest of the tank...Simpifying we have
6T = 48
T = 8 minutes
So, since B was on for 8 minutes it put 2.4(8) = 19.2 liters into the tank.
Copying other person's answer is called Plagiarism.
It is illegal because you are stealing someone elses work. It is cheating.
Do not do this KOOL-AID. It is definitely not COOL!
Kool-Aid......if you're going to "steal" answers....at least make them LOOK a LITTLE different from the original !!! Why would you do this??? I may sometimes present another way to find an answer, but I usually don't mimic the same approach given by others. This is known as "beating a dead horse".......