\# 1
Suppose a plug-in electric vehicle has a 64 kWh battery. The energy consumption of the vehicle is \( 16 \mathrm{kWh} / 100 \mathrm{~km} \).
a. If the battery is charged to \( 60 \% \) of its capacity, how many miles can be driven before recharging the battery?
b. If you want to travel 200 miles before recharging the battery, you will need to charge the battery to what percent of its capacity before starting your trip?