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You can put this solution on YOUR website!
Bill is 5 times older than Keira,
\n" ); document.write( "b = 5k
\n" ); document.write( " Bill is 5 times older than Phil,
\n" ); document.write( "b = 5p
\n" ); document.write( " Oscar is twice as old as Bill,
\n" ); document.write( "o = 2b
\n" ); document.write( " and the total age of all of them at 81.
\n" ); document.write( "b + k + p + o = 81\r
\n" ); document.write( "\n" ); document.write( "Something wrong here, as written, this will not produce an integer solution which is generally required in problems like this.
\n" ); document.write( "Change a couple words in this problem, it works then
\n" ); document.write( "\"
\n" ); document.write( "Bill is \"3 years\" older than Keira,
\n" ); document.write( "b = k + 3
\n" ); document.write( "k = b - 3
\n" ); document.write( " Bill is 5 times older than Phil,
\n" ); document.write( "b = 5p
\n" ); document.write( "divide both sides by 5
\n" ); document.write( "p = .2b
\n" ); document.write( " Oscar is twice as old as Bill,
\n" ); document.write( "o = 2b
\n" ); document.write( " and the total age of all of them at 81.
\n" ); document.write( "b + k + p + o = 81
\n" ); document.write( " replace: k with (b-3), replace p with .2b and o with 2b
\n" ); document.write( "b + (b-3) + .2b + 2b = 81
\n" ); document.write( "4.2b = 81 + 3
\n" ); document.write( "b = 84
\n" ); document.write( "b = 84/4.2
\n" ); document.write( "b = 20 yrs old is bill
\n" ); document.write( "then
\n" ); document.write( "k = 20-3 = 17 yrs is Keira
\n" ); document.write( "and
\n" ); document.write( "p = .2*20 = 4 yrs is Phil
\n" ); document.write( "and
\n" ); document.write( "o = 2 * 20 = 40 yrs is Oscar
\n" ); document.write( ":
\n" ); document.write( "Check: 20 + 17 + 4 + 40 = 81
\n" ); document.write( ":
\n" ); document.write( "Anyway this is the method.
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "