document.write( "Question 90307: At what time after 5 o'clock will the hands of the clock be forming 120 degrees? \n" ); document.write( "
Algebra.Com's Answer #65573 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! At what time after 5 o'clock will the hands of the clock be forming 120 degrees? \n" ); document.write( ": \n" ); document.write( "Let x = position of the minute hand when this occurs: \n" ); document.write( ": \n" ); document.write( "Convert the hr hand to degrees. \n" ); document.write( "360/12 = 30 degrees per hr \n" ); document.write( "The portion of a 5 min interval of the hour hand would be: \n" ); document.write( "x/60*30 = .5x \n" ); document.write( "; \n" ); document.write( "Convert min hand do degrees \n" ); document.write( "360/60 = 6 degrees per minute \n" ); document.write( "Number of degrees by the minute hand would be 6x \n" ); document.write( ": \n" ); document.write( "5 o'clock = 5 * 30 = 150 degrees (added to the hr hand degrees) \n" ); document.write( ": \n" ); document.write( "Min hand position - hr hand position = 120 degrees \n" ); document.write( "6x - (150 + .5x) = 120 \n" ); document.write( "6x - 150 - .5x = 120 \n" ); document.write( "6x - .5x = 120 + 150 \n" ); document.write( "5.5x = 270 \n" ); document.write( "x = 270-5.5 \n" ); document.write( "x = 49.1 min \n" ); document.write( ": \n" ); document.write( "The time when the hands form a 120 degree angle would be 5:49.1 \n" ); document.write( " \n" ); document.write( " |