document.write( "Question 1069984: Use unit multipliers to convert 400 yards per second to miles per hour.\r
\n" ); document.write( "\n" ); document.write( "(Please show work when you do it step by step, I have trouble with these kind of problems.)
\n" ); document.write( "

Algebra.Com's Answer #685073 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Use unit multipliers to convert 400 yards per second to miles per hour.
\n" ); document.write( "----------------
\n" ); document.write( "Change to yards/hour
\n" ); document.write( "---
\n" ); document.write( "Include the units in the calculations.
\n" ); document.write( "400 yd/sec * 3600 sec/hr = 1440000 yd/hr - notice the seconds cancel.
\n" ); document.write( "-----
\n" ); document.write( "1440000 yd/hr * 1 mile/1760 yd = 1440000/1760 yd*mile/hr*yd
\n" ); document.write( "The yards cancel
\n" ); document.write( "=~ 818.2 mi/hr
\n" ); document.write( "=====================
\n" ); document.write( "Including units makes it obvious and avoids multiplying when you should divide and v.v.
\n" ); document.write( "
\n" ); document.write( "
\n" );