If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?

A. 1 B.
7
2
C. 7 D. 49

• (men*day*hour)/work done
  (M1*D1*h1)/w1 = (M2*d2*H2)/W2
  (7*7)/7 = (1*d2)/1
  d2=7
• 7 years agoHelpfull: Yes(1) No(0)
• Let the required number days be x.
  
  Less spiders, More days (Indirect Proportion)
  
  Less webs, Less days (Direct Proportion)
  
  Spiders 1 : 7 :: 7 : x
  Webs 7 : 1
  
  1 x 7 x x = 7 x 1 x 7
  
  x = 7.
• 10 years agoHelpfull: Yes(0) No(1)