Together Janice and Roger can wash Janice's car in 50 minutes. Alone it takes Janice 10 minutes less than Roger. Find the number of minutes it takes each of them to wash the car al

• (1/x)+1/(x-10)=1/50
  50x-500+50x=x^2-10x
  x^2-110x+500=0
  x=105.25 minutes
  or
  x=9.50 minutes (reject, ans not reasonable)
  ..
  hence
  Roger would take 105 minutes to do the job alone.
  Janice would take 105-10=95 minutes to do the job alone.
• 10 years agoHelpfull: Yes(2) No(0)
• r+j=50
  r-j=10
  r=30
  j=20
• 10 years agoHelpfull: Yes(0) No(2)