Question

A light bulb consumes 3600 watt-hours in 3 days and 18 hours. How many watt-hours does it consume per day?

Answer 1

Answer:

$960$ Watt

Step-by-step explanation:

Power consumed by light bulb in $3$ days and $18$ hours = $3600$ Watt

number of hours in one day = $24$ hours

total number of hours in $3$ days and $18$ hours = $3*24 + 18 = 90$ hours

Power consumed by light bulb in $1$ hour = $\frac{3600}{90} = 40$ Watt

∴ Power consumed by light bulb in $1$ day ($24$ hours) = $40*24 = 960$ Watt

Answer 2

18 hours = 18/24  reduces to 3/4 of a day

3/4 = 0.75

so 3600/3.75 = 960 watts per day