Question

The cost per year in electricity for an LED Nightlight plugged in constantly is about $0.02. If you use the nightlight for 80 years, what would the electricity cost you ?

Answer 1

1.6...... 0.02x80 gets you 1.6

Answer 2

electricity for an LED nightlight plugged,

the cost per year = $0.02

therefore, the total cost for 80 years = $0.02*80 = $1.6