Eleven batteries are hooked in series to provide a 54-V power source. Some of the batteries are 9 V and some are 1.5 V. How many of each type are used?
A) 5 batteries of 1.5-V are used,
8 batteries of 9-V are used.
B) 6 batteries of 1.5-V are used,
5 batteries of 9-V are used.
C) 8 batteries of 9-V are used,
8 batteries of 1.5-V are used.
D) 4 batteries of 9-V are used,
7 batteries of 1.5-V are used.
E) 5 batteries of 9-V are used,
6 batteries of 1.5-V are used.

Question

Quizplus · Accepted Answer

5 batteries of 9-V provide 45 V, and 6 batteries of 1.5-V provide 9 V. Together, they sum up to 54 V with a total of 11 batteries.

Eleven Batteries Are Hooked in Series to Provide a 54-V