The width of a rectangle is 10 meter and its area is 150 square meter. If length of the rectangle is increased then its new area is 4/3 times of the original area. What is the new perimeter of the rectangle?
(a) 48 m
(b) 52 m
(c) 54 m
(d) 60 m
(e) None of these

• (d); Let length of new rectangle be x m
  Then x×10=150×4/3=200 or, x=20 m
  Hence new perimeter=2(10+20)=60 m
  
• 8 years agoHelpfull: Yes(12) No(0)
• widths =10; (given)
  area= 150;(given)
  breath = 15(area/width);
  then 4/3 increased of 150 i.e 200(new Area);
  if (for 150 == 15 ) then (200 == 20); length of new rectangle is 20 and breath is same as 10
  new Parameter =2(l+b) = 2(20+10) = 60meters. :)
• 7 years agoHelpfull: Yes(2) No(0)
• 60
  x*10=150
  x=150
  y*10=4/3*150
  y=20
  p=2(10+20)=60
• 8 years agoHelpfull: Yes(0) No(2)