document.write( "Question 866631: David's age this year is a multiple of 5. Next year David's age will be a multiple of 7. How old is David now? \n" ); document.write( "
Algebra.Com's Answer #522393 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! David's age this year is a multiple of 5. Next year David's age will be a multiple of 7. How old is David now? \n" ); document.write( "----- \n" ); document.write( "David's age now:: 5k \n" ); document.write( "Next year his age is; 5k+1 = 7m \n" ); document.write( "----- \n" ); document.write( "Find an integer solution for \"k\" and for \"m\":: \n" ); document.write( "Sequence of 5k+1:: 6,11,16,21 \n" ); document.write( "Sequence of 7m:::: 7,14,21 \n" ); document.write( "-------- \n" ); document.write( "Equation: \n" ); document.write( "5k+1 = 21 \n" ); document.write( "5k = 20 \n" ); document.write( "------- \n" ); document.write( "David is 20 now. \n" ); document.write( "--------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------------------- \n" ); document.write( " |