Three resistors, of 40 , 60 , and 120 , are connected in parallel, and this parallel

Three resistors, of 40 Ω, 60 Ω, and 120 Ω, are connected in parallel, and this parallel group is connected in series with 15 Ω in series with 25 Ω. The whole system is then connected to a 120- V source. Determine 

(a) The current in the 25 Ω, 

(b) The potential drop across the parallel group, 

(c) The potential drop across the 25 Ω, 

(d) The current in the 60 Ω, 

(e) The current in the 40 Ω.