SOLUTION: 10 total batteries used 6 volt and 12 volt batteries hooked in a series equal 84 volts. how many of each type of battery is used?
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Question 511557: 10 total batteries used 6 volt and 12 volt batteries hooked in a series equal 84 volts. how many of each type of battery is used? Answer by rfer(16322) (Show Source):
You can put this solution on YOUR website! s+t=10 t=10-s
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6s+12t=84
6s+12(10-s)=84
6s+120-12s=84
-6s=84-120
-6s=-36
s=6 six volt batteries
t=10-6=4 tewelve volt batteries
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6*6+12*4=84
36+48=84
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