document.write( "Question 1071799: In an old algebra book the section on ratio: a movie projector uses 8 mm film. The images projected on a screen has the enlargement ratio of 1 to 190 with no blurring or distortion. The original negative is 8 mm wide, and projected image is 8 * 190, or 1520 mm. \r
\n" ); document.write( "\n" ); document.write( "They are saying the ratio is 8 mm. to 5 ft. \r
\n" ); document.write( "\n" ); document.write( "In the same section, 6 inches to 2 feet; the 2 ft. has to be changed to 24 in. to get the ration 6 to 24. \r
\n" ); document.write( "\n" ); document.write( "My question: How can the 8 mm. be compared to 5 ft.? Definition in the section; Ratio represents quantities of the same kind and are measured in the same units. \n" ); document.write( "

Algebra.Com's Answer #686704 by josgarithmetic(39620) $\"\"$ $\"About$

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$\"8%2Amm%2A190=1520mm\"$ \r
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document.write( "Use these conversion factors to change the millimeters into feet.\r\n" );
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document.write( "10 mm = 1 cm\r\n" );
document.write( "1 inch = 2.54 cm\r\n" );
document.write( "12 inches = 1 foot\r\n" );
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\n" ); document.write( "\n" ); document.write( "about 4.987 feet \n" ); document.write( "

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