35. •• The electricity supplied in Exercise 34 is transmitted over a line 80.0 km long with a resistance of 0.80 Ω/km.

(a) How many kilowatt-hours are saved in 5.00 h by stepping up the voltage?

(b) At $0.15/kWh, how much of a savings (to the nearest $10) is this to all the consumers the line supplies in a 30-day month, assuming that the energy is supplied continuously?