Bulbs and electricity

In the sports hall, 875 identical light bulbs light for 2 hours. How long does it take for 100 such light bulbs to consume the same amount of electricity?

Correct answer:

t =  17.5 h

Step-by-step explanation:

875 2=100 t  t=875 2100=352 h=17.5 h



Did you find an error or inaccuracy? Feel free to write us. Thank you!



Showing 1 comment:
#
Math student
I can't understand the result. How 875 lighting for2 hours and 100 lighting for 17.5 hour

avatar









Tips to related online calculators
Do you want to convert time units like minutes to seconds?

Related math problems and questions:

  • Electric energy
    bulb There are 875 identical light bulbs in the sports hall lighting for 2 hours. How long does the same amount of electricity consume 100 such bulbs?
  • Assembly parts
    machine Nine machines produce 1,800 parts on nine machines. How many hours will it produce 2 100 parts on seven such machines?
  • Five tractors
    tractors Five tractors plow the fields in 4.8 hours. How long will it take to plow the field when, after an hour and a half of work, two tractor drivers have been called up for another task?
  • Slices of ham
    energy If 17 slices equals 70 calories how many calories are in 5 slices?
  • Workers
    work 9 workers dig a canal 120 meters long for eight hours. For how long would be dig five workers canal 200 meters long?
  • Five tractors
    tractor Five tractors plow the field in 4.8 hours. How long will it take to plow this field if after 1.5 hours of work, two tractors went to a different field?
  • Five pumps
    nadrz The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps?
  • Six identical
    balloon Six identical compressors inflate 180 balloons in one hour. How many balloons inflate one compressor in 10 minutes?
  • The work
    clock-night-schr The work was to be done by 150 workers. At the beginning of their work, their number reduced by 40, which increased the time of work by 5 and 1/3 of the schedule. How long did work take?
  • The bulbs
    resistor The bulbs are connected serially two bulbs and one resistor. Each bulb has a resistivity of 100 ohms and resistor of 60 ohms The voltage source in the circuit is 24 volts. Do you know what voltage to measure on individual appliances?
  • Electric input power
    resistor Solve problems related to electric power: a) U = 120 V, I = 0.5 A, P =? b) P = 200 W, U = 230 V, I =? c) I = 5 A, P = 2200W, U =?
  • Blueberries
    blueberry 5 children collect 4 liters of blueberries in 1.5 hours. a) How many minutes do 3 children take 2 liters of blueberries? b) How many liters of blueberries will be taken by 8 children in 3 hours?
  • Tank No 8
    tank1 Tank is filled by one inlet valve with a flow rate of 12 liters per second in 72 minutes. How long take the tank to fill, if we open half an hour after one more inlet?
  • Cleaners
    clean Milan would clean up the room for 2.5 hours, Eric would take 10 hours. How long they swept the room together?
  • Six students
    painter Two pupils painted the class in four hours. How long will it take for six pupils?
  • A report
    work Maricris can type a committee report in 5 hours. Jane helped Maricris and together they finished the report in 3 hours. How long would it take Jane to complete the report she had worked alone?
  • Working alone
    workers Tom and Chandri are doing household chores. Chandri can do the work twice as fast as Tom. If they work together, they can finish the work in 5 hours. How long does it take Tom working alone to do the same work?