P and Q can write 135 pages in 27 hrs. P can write 3 pages in 1 hour. How much time will it take Q to write 42 pages.

• Ans: 21 h
  Exp:
  p+q : In 27 h = 135 p, then 1 h = 5 p
  and P: In 1 h = 3 p, then q in 1 h = 5-3=2
  2 p q can write in 1 h
  42 p q can w8 in 42/2=21 h.
• 11 years agoHelpfull: Yes(18) No(0)
• ans: let the time b x
  
  
  135/27hr=(3/1hr)+(42/x)
  
  135/27=(3x+42)/x
  
  by calculating the value of x, we get x=21 hr.
• 7 years agoHelpfull: Yes(1) No(0)