Saturday

September 20, 2014

September 20, 2014

Posted by **julie** on Thursday, January 6, 2011 at 1:41am.

- algebra 1 -
**Kay**, Thursday, January 6, 2011 at 9:20amTotal length (given) ie. a+b = 100

a = b + 18

We can rewrite this b = a -18

Now solve it the normal way.

substitute for b in the first equation

a + b = 100

a + a - 18 = 100

2a -18 = 100

2a = 100 + 18

2a = 118

a = 59

To get b:

go to equation and apply value of a in b = a -18

b = 59- 18

ie. b = 41

to verify:

a + b should be = 100

a= 59 b = 41

59 + 41 = 100 !

Bingo!

Done! Hope this helps.

**Answer this Question**

**Related Questions**

Algebra - A 180-m wire is cut into three pieces. The third piece is 20 m longer ...

math - a 17 foot piece of string is cut into two pieces so that the longer piece...

math - A cable 40 feet long is cut into three pieces so the length of the second...

algebra - A 120-foot-long rope is cut into 3 pieces. The first piece of rope is ...

geometry - how many inches long is the radius of the largest circle that can fit...

algebra - use guess and check to solve the following problem. Write your ...

Math algebra - A 120- foot long rope is cut into three pieces the first piece of...

algebra - A 384-m wire is cut into three pieces. The second piece is 3 m longer ...

Math word problem - I know the answer, but is there a formula to show work? Amy ...

algebra - a cable is cut into 2 pieces. One piece is twice as long as the other ...