document.write( "Question 207037: A barn has stalls for 1000 animals. Forty percent of the stalls are for ponies and the rest for horses. On Tuesday, there were 200 ponies and a bunch of horses at the barn. The barn was 75 percent full. How many horses were in the stalls?\r
\n" ); document.write( "\n" ); document.write( "(A) 400 (B) 450 (C) 500 (D) 550 (E) 600
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Algebra.Com's Answer #156531 by rfer(16322)\"\" \"About 
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D) 550
\n" ); document.write( "let y = horses
\n" ); document.write( "200+y=1000(.75)
\n" ); document.write( "200+y=750
\n" ); document.write( "Subtract 200 from both sides
\n" ); document.write( "200-200+y=750-200
\n" ); document.write( "y=550
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