Harry travelled 4/7th of a journey by train, 5/6th of the balance by bus, and he walked the remaining distance of 3 kms , what is the total distance travelled by him?
a).28 kms
b).42 kms
c).48 kms
d).56 kms
e).70 kms

• 42 km...let distance be x km den...4x/7 by bus => balance =3x/7; now 5/6 of balance = (5/6)*(3x/7)=5x/14;so remaining is (3x/7)-(5x/14)=x/14 which is equal to 3 km => x= 42 kms
• 11 years agoHelpfull: Yes(3) No(1)
• 42 kms
  
  If x is the total distance, then
  x*(1-4/7)*(1-5/6)=3
  x*(3/7)*(1/6)=3
  x= 42 kms.
• 11 years agoHelpfull: Yes(2) No(1)
• Total Distance is d
  (4/7)d+(5/6)*(d-(4/7)d)+3=d
  (4d/7)+(15d/42)+3=d
  (39d/42)+3=d
  d-(39d/42)=3
  3d/42=3
  d=42kms
• 11 years agoHelpfull: Yes(0) No(1)