Tank A contains $5$ times as much water as Tank B. Tank B contains $5$ more litres of water than Tank C. The total amount of water in Tank C and Tank D is equal to the total amount of water in Tank A. Given that Tank D contains $41$ ℓ of water, how much water is there in Tank B? Give your answer in litres. 
Overseas Competition->Knowledge Point->Calculation Modules->Unit Conversion->Converting between Units of Volume and Capacity Overseas Competition->Knowledge Point->Geometry Modules->3-D Shapes->Cylinders and Cones->Volume of a Cylinder