A swimming pool holds 600,000 liters of water. The pool has two drainage pipes....help!!!!!!!!!!!!?
A swimming pool holds 600,000 liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty it in 200 minutes, and the second pipe alone can empty it in 120 minutes. When both pipes are draining together, how long does it take them to empty the pool? MINUTES:_________________
How long does it take to empty the pool? math help?
The first pipe can empty the entire pool by itself in 100 minutes. Therefore, lets figure out how many litres of water the first drainage pipe can drain in 1 minute. Divide the amount of water in the pool by 100. 600,000/100 = 6000 The first drainage pipe can drain 6000 litres of water every minute. The second pipe can empty the entire pool by itself in 150 minutes. Therefore, lets figure out how many litres of water the second drainage pipe can drain in 1 minute. Divide the amount of water in the pool by 150. 600,000/150 = 4000 The second drainage pipe can drain 4000 litres of water every minute. Therefore, if we start draining the pool and do so for 1 minute, 6000 litres will be drained by the first drainage pipe and 4000 litres will be drained by the second drainage pipe. All together, 10,000 litres of water have been drained in 1 minute. Therefore if we divide the amount of water in the pool by the amount of water that can be drained in one minute (providing both drainage pipes are in use) then we will have the number of minutes it takes to drain the whole pool. 600,000/10,000 = 60 Therefore, it will take 60 minutes (or one hour) for the entire pool to be drained.
How many liters of water does my pool hold?
Volume= pi( r^2)(h)=pi(8^2)(4)= 804.25 ft^3 , but we have to convert the volume into liters. Volume =804.25 ft^3 x (12 in)^3 /ft^3 x (2.54 cm)^3 / in^3 x (1 ml / cm^3 ) x (L/ 1000 ml) ..............( ft^3 cancels out)..( in^3 cancels out) ..( cm^3 cancels out ).. (ml cancels out).. L remains Volume= { 804.25 x (12)^3 x (2.54)^3 } / 1000 Volume = {804.25(1728)(16.39) } / 1000 = 22,778 L
Mathematics: How many litres will a tank hold with a length of 7.5m, breadth of 2.4m and height of 3m?
We can safely say the tank is a cuboid as length breadth and height is given.The amount of water it can hold can be calculated by simply using the formula for volume of cuboid = L*B*H (here L,B,H are length, breadth and height respectively )So V= 7.5*2.4*3 cubic meters =54 cubic metersBut the answer should be stated in litres So using a simple conversion 1 cubic meters = 1000 litresThe answer is 54000 litres
Word problem involving multiple rates.?
A swimming pool holds 600,000 liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty it in 120 minutes, and the second pipe alone can empty it in 200 minutes. When both pipes are draining together, how long does it take them to empty the pool?