A chemical mixture requires 2 chemicals, A and B in the proporion 3:2, this mixture is to be prepared in a tank of capacity 50 litres. Pipe A can pile the tank with chemical A in 50 minutes and pipe B can fill the tank with chemical B in 30 minutes. if both the pipes are opened when the tank is empty, how much time will it take for both the pipes to fill d tank with the proportional mixture?
A) (10,10)
B) (9,9)
C) (12,12)
D) (9,12)
E) (12,9)

• ans:(9,12)
  chem (A) :must fill the tank by 30 litres and it takes 15 min to fill 50 litres
  so, 15/50 =x/30 =>x=9
  chem (B):must fill the tank with 20 litres and it takes 30 min to fill 50 litres
  so, 30/50 =x/20 =>x=12
• 8 years agoHelpfull: Yes(14) No(16)
• ans:(12,9)
• 5 years agoHelpfull: Yes(2) No(4)