A farmer has two rectangular fields. The larger field has twice the length and 4 times the width of the smaller field. If the smaller field has area K, then the are of the larger field is greater than the area of the smaller field by what amount?
(a) 6K (b) 8K (c) 12K (d) 7K

• 7k.
  let area of smaller field is a1=L*B=K.
  area of larger field is a2=2L*4B=8K.
  then area of larger field greater than area of smaller field is a2-a1.
  so amount of area of larger field is 8K-K=7K.
• 13 years agoHelpfull: Yes(20) No(0)
• let L1,W1 be the length and width of a smaller field
  the area K=L1*W1
  then length of large field is L2= 2*L1
  width of large field is W2= 4*W1
  area of large field is L2*W2=2L1*4W1=8L1W1=8K
  
• 13 years agoHelpfull: Yes(3) No(3)
• given, l*b=k
  so,
  2l*4b=2*4*l*b=2*4=8k
• 13 years agoHelpfull: Yes(1) No(0)
• let the length and the width of the smaller field is x and y respectively...
  so area K=x*y
  now the length and width of the larger field is 2x and 4y respectively...
  so the area will be 2x*4y=8xy=8K
• 13 years agoHelpfull: Yes(1) No(3)
• b)8k
  l1=2l;lw=k
  w1=4w
  l1w1=2l*4w=8lw=8k
• 13 years agoHelpfull: Yes(0) No(0)