Refer to the data below and answer the questions that follow

Ten electrical equipments (denoted by circles) are connected using wire connec ons as shown below. The figures within the circles denote the electric energy that the equipment consumes. The figure next to a par cular circle denotes its equipment number. For example: Equipment 1 consumes 50 units while equipment 5, consumes ‘A’ units. The figures next to a par cular wire connec on denote the electric energy the line carries. There was no loss of electric energy at any equipment i.e., the sum of the amount of electric energy leaving the equipment and that consumed by the equipment is equal to the amount of electric energy entering the equipment. At least one unit of electric energy must flow through all the lines. Also, the flow through each line has to be a posi ve integer.