document.write( "Question 825889: The average age of six children is 13 years and 5 months. A seventh child joins the group, increasing the average age by two months. How old is this seventh child?\r
\n" ); document.write( "\n" ); document.write( "My work:
\n" ); document.write( "2*6=12months (1year)
\n" ); document.write( "5+2=2 months
\n" ); document.write( "Answer= 13 years 7 months (after adding the two months)= 14 years 7 months\r
\n" ); document.write( "\n" ); document.write( "Is that correct thank you!!!\r
\n" ); document.write( "\n" ); document.write( "If there is a different method please let me know!!! \r
\n" ); document.write( "\n" ); document.write( "Gracias!!!
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Algebra.Com's Answer #497667 by Fermat(136)\"\" \"About 
You can put this solution on YOUR website!
I'm not sure what method you used to work out your answer, but this is how I would do it.\r
\n" ); document.write( "\n" ); document.write( "Av age for 6 children is 13 yrs and 5 mths.
\n" ); document.write( "Sum of all their ages is 6*(13 yr + 5 mths) = 78 yrs + 30 mths\r
\n" ); document.write( "\n" ); document.write( "Av age for 7 children is 13 yrs and 7 mths (an increase of 2 mths)
\n" ); document.write( "Sum of all their ages is 7*(13 yr + 7 mths) = 91 yrs + 49 mths\r
\n" ); document.write( "\n" ); document.write( "The difference in the two totals must be the age of the 7th child.\r
\n" ); document.write( "\n" ); document.write( "(91 yrs + 49 mths) minus (78 yrs + 30 mths) = 13 yrs and 19 mths\r
\n" ); document.write( "\n" ); document.write( "So age of 7th child is 14 yrs and 7 mths
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