Answer:
Over the life of the battery, the battery that is most cost-effective is:
The AA alkaline non rechargeable battery.
Explanation:
a) Data and Calculations:
Number of times that NiCad batteries can be recharged (reused) = 100 times
Cost of a 4 pack of AA NiCad rechargeable batteries = $10.80
Recharging cost = $1 ($0.01 * 100)
Total cost of AA NiCad rechargeable batteries = $11.80
Cost per use = $0.12 ($11.80/100)
Cost of a 4 pack of AA alkaline non rechargeable batteries = $3.69
Cost per use of AA alkaline non rechargeable batteries = $0.04 ($3.69/100)
b) The comparison and the resulting conclusions are based on the assumption that the non rechargeable and the rechargeable batteries enjoy equal useful life. Therefore, the AA alkaline non rechargeable batteries are also used 100 times.