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Answer: See below
Step-by-step explanation:
For both problems, you would need to make a proportion.
A.
[tex]\frac{3.99}{8 batteries} =\frac{x}{1 battery}[/tex] [cross multiply]
[tex]3.99=8x[/tex] [divide both sides by 8]
[tex]x=0.50[/tex]
B.
[tex]\frac{2.79}{6 batteries} =\frac{x}{1 battery}[/tex] [cross multiply]
[tex]2.79=6x[/tex] [divide both sides by 6]
[tex]x=0.47[/tex]
Now that we know the price per battery, we know that this is the better value. For part A, a single battery costs £0.50. For part B, a single battery costs £0.47. 0.47 is cheaper than 0.5. Therefore, the 6 battery pack has the better value.
Answer:
For part A, a single battery costs £0.50. For part B, a single battery costs £0.47. 0.47 is cheaper than 0.5. Therefore, the 6 battery pack has the better value.
Step-by-step explanation: