Answer:
Since the required energy is less than the produced energy, the power is sufficient to light 9 light bulbs.
Step-by-step explanation:
A power plant has 4 tons of coal. A ton produces 2,460 kilowatt hours of electricity.
It takes 876 kilowatt hours of electricity to power a 100-watt light bulb for a year.
We have to light 9 bulbs a year.
So the required energy = 9[tex]\times[/tex] 876 = 7884 kilowatt hours.
Power plant produces 4 tons of coal, so power = 4 [tex]\times 2460[/tex]
= 9840 kilowatt hours.
Since the required energy is less than the produced energy, the power is sufficient to light 9 light bulbs.
