In a house ,5 CF lamps each of 20 W, works for 4 hours, 4 fans each of 60 W work for 5 hours and a TV of 100W works for 4 hours in a day. What will be the daily composition shown by the watt hour meter ?

In a household there are 4 CFL's of 15W each working for 5hrs a day, 2 fans of 60W working for 5hrs daily , 500Wiron box working for 15 minutes a day. How many units of electricity is used in this house . What is the cost of electricity costing 3 rupees per unit ?

In a house 5 lamps of 60w used in 3 hours and 6 lamps of 40 w are used in 5 hours daily. Which is the device used to measure the used electric current?

(Manufacturing problem) A manufacturer has three machines I , II and III installed in his factory. Machines I and II are capable of being operated for at most 12 hours where as machine III must be operated for atleast 5 hours a day. She produces only two items M and N each requiring the use of all the three machines. The number of hours required for producing 1 unit of each of M and N on the three machines are given in the following table: She makes a profit of Rs 600 and Rs 400 on items M and N respectively. How many of each item should she produce so as to maximise her profit assuming that she can swll all the items that she produced ? What will be the maximum profit ?

In factory there are two machines A and B producing toys.They respectively produce 60 and 80 units in one hour.A can run a maximum of 10 hours and B a maximum of 7 hours a day .The cost of their running per hour respectively amount to 2,000 and 2,500 rupee.The total duration of working these machines cannot exceed 12 hours a day.If the total cost cannot exceed Rs. 25,000 per day and the total daily production is atleast 800 units,then formulate the problem mathematically.

A company products two aricles X and Y.There are two different departments through which the articles are processed namely assembly and finishing.The potential capacity of the assembly department is 60 hours,a week and that of finishing department is 48 hours a week.Production of one unit of X requires 4 hours of assembly and 2 hours of finishing.Each of the unit Y requires 2 hours in assembly and 4 hours in finishing.If profit is Rs.8 for each unit of X and Rs.6 for each unit of y,(i) formulate an LPP to maximize the profit

A manufacturur produces nuts and bolts.It takes 1 hour of work on machine A and 3 hours on machine B to produce a package of nuts. It takes 3 hours on machine A and 1 hour on machine B to produce a package of bolts.He earns a profit of Rs.17.50 per package on nuts and Rs.7 per package on bolts.How many package of each should be produced each day so as to maximise the profit,if he operates his machine for at the most 12 hours a days? By suitable defining the variables write the objective function of the problem.

A company manufactures two types of rovelty souvenirs made of plywood. Souvenirs of type A require 5 minutes each for cutting and 10 minutes each for assembling. Souvenirs of type B require 8 minutes each for cutting and 8 minutes each for assembling. There are 3 hours 20 minutes available for cutting and 4 hours for assembling. The profit is Rs 5 each for type A and Rs 6 each for type B souvenirs. How many souvenirs of each type should the company manufacture in order to maximise the profit?

If 0,2 Omega , 0.3Omega , 0.4 Omega , 0.5 Omega and 12 Omega resistors are connected to a 9 V battery in parallel, what will be the current through the 12 Omega resistor ?