document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=89379>Question 89379</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3.	In captivity, the average life span of a grizzly bear is 9 years more than that of a tiger. The sum of the two average life spans is 41 years. Find the average life span of a tiger in captivity. <BR>\n" );
document.write( "a.	Define the variables. <BR>\n" );
document.write( "b.	Write the expression for the life span of a grizzly bear in terms of the life span of a tiger. <BR>\n" );
document.write( "c.	Write an equation for the sum of their life spans in term of one variable. <BR>\n" );
document.write( "d.	Solve the equation for the life span of a tiger. \r<BR>\n" );
document.write( "\n" );
document.write( "4.	George is 12 years older than Jeannie. The sum of their ages in 5 years will be 50. How old is Jeannie now? <BR>\n" );
document.write( "a.	Define the variables. <BR>\n" );
document.write( "b.	Write an expression for the age of George in terms of Jeannie's age. <BR>\n" );
document.write( "c.	Write an equation for the sum of their ages in 5 years from now. <BR>\n" );
document.write( "d.	Solve the equation for the age of Jeannie now. <BR>\n" );
document.write( "5.	Mandy begins bicycling west at 20mph. Liz leaves from the same point 1 hour later bicycling west at 30mph. When will she catch up with Mandy? <BR>\n" );
document.write( "a.	Define the variables. <BR>\n" );
document.write( "b.	Make a chart. <BR>\n" );
document.write( "distance=rate x time 	Rate 	Time 	Distance <BR>\n" );
document.write( "Mandy 	20 	t 	20t <BR>\n" );
document.write( "Liz 	30 	t -1 	30(t-1) \r<BR>\n" );
document.write( "\n" );
document.write( "c.	Set the distances equal to one another (they travel the same distance) and solve the equation for t. <BR>\n" );
document.write( "d.	What does t represent? <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #64979 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=64979\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3. In captivity, the average life span of a grizzly bear is 9 years more than that of a tiger. The sum of the two average life spans is 41 years. Find the average life span of a tiger in captivity. <BR>\n" );
document.write( "a. Define the variables.<BR>\n" );
document.write( "Let t be tiger's life span and b be the bear's life span.<BR>\n" );
document.write( "--------------- <BR>\n" );
document.write( "b. Write the expression for the life span of a grizzly bear in terms of the life span of a tiger. g=t+9 <BR>\n" );
document.write( "c. Write an equation for the sum of their life spans in term of one variable.<BR>\n" );
document.write( "t+t+9 = 41<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "d. Solve the equation for the life span of a tiger. <BR>\n" );
document.write( "2t = 32<BR>\n" );
document.write( "t=16<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "4. George is 12 years older than Jeannie. The sum of their ages in 5 years will be 50. How old is Jeannie now? <BR>\n" );
document.write( "a. Define the variables.<BR>\n" );
document.write( "George's age is g ; Jeannie's age if j.<BR>\n" );
document.write( "------------------------- <BR>\n" );
document.write( "b. Write an expression for the age of George in terms of Jeannie's age.<BR>\n" );
document.write( "g = j-12<BR>\n" );
document.write( "--------------- <BR>\n" );
document.write( "c. Write an equation for the sum of their ages in 5 years from now.<BR>\n" );
document.write( "g+5 + j+5 = 50<BR>\n" );
document.write( "----------------- <BR>\n" );
document.write( "d. Solve the equation for the age of Jeannie now.<BR>\n" );
document.write( "(j-12)+5 + j+5 = 50<BR>\n" );
document.write( "2j - 2 = 50<BR>\n" );
document.write( "2j = 52<BR>\n" );
document.write( "j = 26 yrs old<BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( " <BR>\n" );
document.write( "5. Mandy begins bicycling west at 20mph. Liz leaves from the same point 1 hour later bicycling west at 30mph. When will she catch up with Mandy? <BR>\n" );
document.write( "a. Define the variables<BR>\n" );
document.write( "Mandy's time is t; Liz's time is t-1. <BR>\n" );
document.write( "b. Make a chart. <BR>\n" );
document.write( "distance=rate x time Rate Time Distance <BR>\n" );
document.write( "Mandy: rate = 20 mph ; time =  t ; distance=  20t<BR>\n" );
document.write( "Liz..: rate = 30 mph ; time = t -1 ; distance = 30(t-1) <BR>\n" );
document.write( "c. Set the distances equal to one another (they travel the same distance) and solve the equation for t.<BR>\n" );
document.write( "20t = 30(t-1)<BR>\n" );
document.write( "20t = 30t-30<BR>\n" );
document.write( "10t = 30<BR>\n" );
document.write( "t = 3 hrs<BR>\n" );
document.write( "============================ <BR>\n" );
document.write( "d. What does t represent? <BR>\n" );
document.write( "Mandy's time.<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );