Answer
See explanation below.
Work Step by Step
a. (6.0 V x 1 alkaline battery / 1.5 V) gives 4 alkaline batteries.
b. Voltage = (6 Ag batteries x 1.6 V / battery) = 9.6 V
c. 12 volt car battery consists of six 2 volt cells. If two cells are less, then four cells remain.
Voltage = (4 cells x 2 V / cell) = 8 V