please this is the second time i am posting this question, the first time i posted this,the person that helped me solve it did not go through the question very well and just sent me the question that has been previously been answered on chegg meanwhile the questions are different , it just has the same value. please help me go through it very well before answering

thank you

Try to use the possibilities in Excel, to solve Ex 12 below. The flow rate of the system, when using one pump with rotating speed 1000rpm, is about 68,5m3/h. Exercise 12 The characteristics of the flow system (piping) in which the pump is installed is: Q(m3/h)H(m)01420164021.56029803810054 How will the operating point change, if we use two of the original pumps with rotating speed 10001/min and install them a) in series b) in parallel