7) batteries properties Battery Brand average life cost A 12 hours $0.50 B 18 hours $2.00 C 24 hours $3.50 If a battery is neede
d for a smoke detector where the biggest priority is for the device to last as long as possible, then which brand is the best choice? A) Battery A B) Battery B C) Battery C D) All 3 brands are equally good choices.
Without caring the cost of
battery then battery C last the longest for average of 24 hrs. but if we
include the cost, then we should calculate the cost per hour.
