(6 marks) (b) A petroleum product of viscosity 0.5mNs/m2 and density 700kg/m3 is pumped through a pipe of 0.15m diameter to storage tanks situated 100m away. The pressure drop along the pipe is 70kN/m2. The pipeline has to be repaired and it is necessary to pump the liquid by an alternative route consisting of 70m of 200mm pipe followed by 50m of 100mm pipe. If the existing pump is capable of developing a pressure of 300kN/m2, will it be suitable for use during the period required for the repairs? Take the roughness