document.write( "Question 51059: A fir tree is 5 times as old as a pine tree. Seven years from now , the sum of their ages will be 32. How old is the fir tree now? \n" ); document.write( "
Algebra.Com's Answer #34056 by darq(90)![]() ![]() You can put this solution on YOUR website! f=5p \n" ); document.write( "(f+7)+(p+7)=32\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substitute f with 5p in the second equation because according to the first equation they are same.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5p+7+p+7=32 \n" ); document.write( "6p+14=32 \n" ); document.write( "6p=18 \n" ); document.write( "pine=3 years old\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "fir is five times older so it is 3*5=15 years old. \n" ); document.write( " |