The cost of 1 battery is 0.43
Step-by-step explanation:
Let the cost of 1 battery be x
We are given that the torch costs 11 times as much as the battery
Cost of torch = 11x
Total cost of 1 battery and torch = 11x+x=12x
Tim pays $10
He receives change of $4.84
Total cost of 1 torch and battery = 10 - 4.84 =$5.16
So,[tex]12x= 5.16[/tex]
[tex]x= \frac{5.16}{12}[/tex]
[tex]x=0.43[/tex]
Hence the cost of 1 battery is 0.43
