ravi decides to walk from goregaon to andheri .he has reached his destination in 2 hr 15 min by covering 3/4 of the distance at 6 kmph and the rest at 8 mph . how far goregaon from andheri?

• t1+t2=9/4 hr
  (3x/4*6)+(x/4*8*1.609)=9/4
  x=15.6 km (ans.)
• 9 years agoHelpfull: Yes(7) No(0)
• speed = distance/ time
  3/4th distance in 6kmph, 1/4th distance in 8kmph
  so t1 = 3x/24 hr and t2 = x/32 hr
  t1+ t2 =2hr 15min = 135/60 hrs
  now put t1 and t2 and we get x value as 14.4km
  
  
• 9 years agoHelpfull: Yes(4) No(1)
• how can you give answer in km? without converting 8 mph(mile per hour) into kmph(kilometer per hour) while calculating.
• 9 years agoHelpfull: Yes(2) No(0)
• let total distance between two cities is d km.
  Therefore , 3d/24 + d/32 = 9/4 ........(1)
  
  on solving equation(1), we have
  12d+3d/96 = 9/4
  15d/96 = 9/4
  15d/24 = 9
  d = 9*27/15 = 243/15 = 81/15 km.
• 9 years agoHelpfull: Yes(0) No(0)
• t1+t2=9/4 hr
  (3x/4*6)+(x/4*8*1.609)=9/4
  x=15.6 km
• 9 years agoHelpfull: Yes(0) No(0)