document.write( "Question 1013340: An animal shelter spends $2.00 per day to care for each bird and $6.50 per day to care for each cat. Gavin noticed that the shelter spent $120.50 caring for birds and cats on Thursday. Gavin found a record showing that there were a total of 31 birds and cats on Thursday. How many birds were at the shelter on Thursday? \n" ); document.write( "
Algebra.Com's Answer #629598 by josgarithmetic(39630)\"\" \"About 
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b and c, the counts of birds and of cats;\r
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\n" ); document.write( "\n" ); document.write( "\"system%28b%2Bc=31%2C2b%2B6.5c=120.5%29\"----the description translated into a system of equations, to account for total birds and cats, and the cost that day.\r
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\n" ); document.write( "\n" ); document.write( "You can try the system this way:
\n" ); document.write( "\"system%28b%2Bc=31%2C4b%2B13c=241%29\", partly preparing for Elimination Method, and then\r
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\n" ); document.write( "\n" ); document.write( "\"system%284b%2B4c=124%2C4b%2B13c=241%29\"----Now eliminate b and find c.\r
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