document.write( "Question 103623: It takes 175 seconds for Sarah to walk from her house to the store and back. Going there she walks at 3 ft/sec and on the way back at 4 ft/sec. How long did it take her to walk to the store? \n" ); document.write( "
Algebra.Com's Answer #75340 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
It takes 175 seconds for Sarah to walk from her house to the store and back. Going there she walks at 3 ft/sec and on the way back at 4 ft/sec. How long did it take her to walk to the store?
\n" ); document.write( "--------------------
\n" ); document.write( "Sara to store DATA:
\n" ); document.write( "Rate = 3 ft/sec ; distance = x ft ; time = x/3 seconds
\n" ); document.write( "----------------------
\n" ); document.write( "Sara from store DATA:
\n" ); document.write( "Rate = 4 ft/sec ; distance = x ft ; time = x/4 seconds
\n" ); document.write( "-------------------------
\n" ); document.write( "EQUATION:
\n" ); document.write( "time to + time from = 175
\n" ); document.write( "x/3 + x/4 = 175
\n" ); document.write( "Multiply thru by 12 to get rid of the denominators:
\n" ); document.write( "4x + 3x = 12*175
\n" ); document.write( "7x = 12*175
\n" ); document.write( "x = 300 ft (distance to the store)
\n" ); document.write( "-------------------------
\n" ); document.write( "x/3 = 100 seconds (time to get to the store)
\n" ); document.write( "=================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
\n" );