Length of a rectangle is increased by 50% and breadth is decreased by 25% what is the difference in the area

• If initial dimensions are l and b, then area = l*b
  Now new dimensions are 1.5 l and 0.75 b , then are = 1.5*0.75*l*b = 1.125 l*b
  change in are = 0.125 *l*b
  % age change ( increase )in area = 100 *0.125 *l*b/lb= 12.5 %
• 13 years agoHelpfull: Yes(7) No(2)
• Area of rect = length*breadth
  New area =150/100 * 75/100 = 112.5
  original area = 100
  increased area 112.5 -100 =12.5
• 9 years agoHelpfull: Yes(2) No(0)
• lenth=l and breath=b so, area=l*b
  now, (150/100)*l*(75/100)*b=225/200 lb
  
  so,225/200lb-lb=25/200lb
  now,(25/200)lb*1/lb*100=1/8*100=12.5% answer............
• 11 years agoHelpfull: Yes(0) No(1)