document.write( "Question 619179: The sum of all the 29 people i.e physicians, surgeons and nurses is 696. If the age of each physician, surgeon and nurse be 1 year, 6 year, and 3 years more, then the average age of whole off staffwould have been 3 years more. If the number of surgeon is a square root of a two digit no. which is also a perfect cube, then the no of nurses in hospital is \n" ); document.write( "
Algebra.Com's Answer #389503 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! The sum of all the ages of 29 people i.e physicians, surgeons and nurses is 696. \n" ); document.write( "If the age of each physician, surgeon and nurse be 1 year, 6 year, and 3 years more, then the average age of whole off staff would have been 3 years more. \n" ); document.write( " If the number of surgeon is a square root of a two digit no. which is also a perfect cube, then the no of nurses in hospital is \n" ); document.write( ": \n" ); document.write( "Let n = number of nurses \n" ); document.write( "Let p = number of physicians \n" ); document.write( "Let s = number of surgeons \n" ); document.write( "; \n" ); document.write( "We should be able to find the number of surgeons from the statement: \n" ); document.write( "\"If the number of surgeon is a square root of a two digit no. which is also a perfect cube\" \n" ); document.write( "The two digit number would be 64, so we have 8 Surgeons \n" ); document.write( "Therefore nurses and physicians: 29 - 8 = 21 \n" ); document.write( ": \n" ); document.write( "s = 8 \n" ); document.write( "n + p = 21 \n" ); document.write( ": \n" ); document.write( "If the age of each physician, surgeon and nurse be 1 year, 6 year, and 3 years more, then the average age of whole off staff would have been 3 years more. \n" ); document.write( " \n" ); document.write( "Replace s with 8, mult equation by 29 \n" ); document.write( "p + 6(8) + 3n = 3(29) \n" ); document.write( "p + 48 + 3n = 87 \n" ); document.write( "p + 3n = 87 - 49 \n" ); document.write( "p + 3n = 39 \n" ); document.write( ": \n" ); document.write( "We know p + n = 21, use elimination here \n" ); document.write( "p + 3n = 39 \n" ); document.write( "p + n = 21 \n" ); document.write( "-------------subtraction eliminates p, find n \n" ); document.write( "2n = 18 \n" ); document.write( "n = 9 nurses\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |