document.write( "Question 285120: Kay wants to buy a new fireplace insert that will burn gas instead of wood. She normally uses two cords of wood winter. Wood costs $250/cord.She is interested in knowing how much she will save if she burns gas in the fireplace insert.Gas costs $0.70 per therm. One therm is 100,000 BTU. The fireplace insert burns 33,000 BTU per hour. Kay figures she will burn the fireplace 5 hours per day for 120 days. How much will she save in one winter if she burns gas instead of wood? \n" ); document.write( "

Algebra.Com's Answer #206725 by richwmiller(17219) $\"\"$ $\"About$

You can put this solution on YOUR website!
250*2 for the winter=$500 for the winter.
\n" ); document.write( "But what does the fireplace insert cost including purchase delivery, installation and maintenance?
\n" ); document.write( "You work backwards starting with what you know and working towards the amount saved.\r
\n" ); document.write( "\n" ); document.write( "5*120=600 hours
\n" ); document.write( "33,000*600=bTU's per hour=19,000,000 btu's
\n" ); document.write( "190*100,000
\n" ); document.write( "190 therms*.70 per therm
\n" ); document.write( "$133
\n" ); document.write( "500-133=367 saved\r
\n" ); document.write( "\n" ); document.write( "Solar energy is cheap but the initial cost is very high. Is it he same with the insert? \n" ); document.write( "

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