If a rainy day occurs on every 10th day and each rainy day accounts for half rainbow then in 20 days what is the percentage of days when rainbow doesn't takes place.

• 16.6666666%
  
• 8 years agoHelpfull: Yes(5) No(3)
• boss will u please expain the solution in details
• 8 years agoHelpfull: Yes(2) No(1)
• 1 rainbow =20days
  no .of days rainbow does not take place =19
  >%of days rainbow does not take place =(19/20)*100
  =95%
• 8 years agoHelpfull: Yes(2) No(3)
• Two rainy days occur in 20 days, rainbow will occur once in 20 days because half of the rainy days produce rainbows. Hence, 19 days will not have rainbow.
  
  % not producing rainbow = 1920×1001920×100 = 95%
  
  
• 7 years agoHelpfull: Yes(0) No(0)