Metal strip of width „x‟ cm. 2 metal strips are placed one over the other, then the combine length of 2 strips is „y‟. If „z‟ strips are placed in that manner. What is the final width of that arrangement?

• here is the proper Q
  A long thin strip of width 7 cm is kept on a flat surface. Another identical strip is kept on it in an overlapping manner such that the combined width of the two is 11 cm. What is the width of 55 such strips kept like this?
  a) 224 b) 223
  c) 225 d) None of these
  ans- 7+4+4.......4=4*54+7 =223
  in terms of x,y,z it is =(z-1)*(y-x)+x
• 13 years agoHelpfull: Yes(5) No(0)
• ans is (z-1)(y-x)+x.
• 13 years agoHelpfull: Yes(0) No(2)