Tim and Elan are 90 km from each other.they start to move each other simultaneously tim at speed 10 and elan 5 kmph. If every hour they double their speed what is the distance that Tim will pass until he meet Elan ?

• Speed of Tim and Elan are in the ratio 2:1. When they double their speed every hour,the ratio still remains same.hence 60:30 is the speed ratio..
  60+30=90 km
  Tim covers 60kms hence.
  
• 11 years agoHelpfull: Yes(8) No(0)
• ques is
  Tim and Elan are 90 km from each other.they start to move each other simultanously tim at speed 10 and elan 5 kmph. If every hour they double their speed what is the distance that Tim will pass until he meet Elan ?
• 11 years agoHelpfull: Yes(6) No(0)
• ques is
  Tim and Elan are 90 km from each other.they start to move each other simultaneously tim at speed 10 and elan 5 kmph. If every hour they double their speed what is the distance that Tim will pass until he meet Elan ?
  ANS::
  tim initial speed=10
  elan speed=5
  after 1hr they traveled distances of 10 and 5 respect and speeds are doubled
  after 2hrs distances are (10+20)=30 and (5+10)=15 kms and their speeds after 2hrs are 60 and 30 kmph resp
  after 2 and half hrs the distances are (30+30=60) and(15+15=30)
  therefore ans is 60 km... :) :)
• 11 years agoHelpfull: Yes(6) No(2)
• What the question is???
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• Data is insufficient?
  or question is nt clear?
  
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• Clear the question please
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• Answer is 60 Km
  
• 11 years agoHelpfull: Yes(1) No(0)
• ans is 60 km...
• 11 years agoHelpfull: Yes(1) No(0)
• Answer will be 66.67 km
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• i don't understand the question.......
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• couldn't understand
  
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• dont submit incomplete question
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• ans is B(ie) 60
  1st hour=tim 10kmph elan 5 the dist will be 90-15=75
  2nd hr=tim->20kmph & elan->10 dist=75-30=45
  3rd hr =tim->40 & elan->20..the totl dist for 3rd hr is 60.but we need only 45km to meet ..so we consider only 45mins instead of 3rd hr..
  In 45mins =>tim ->30 & elan->15
  totl dist travld by tim is 10+20+30=60
• 11 years agoHelpfull: Yes(0) No(0)
• tim 10+20=30km in 2 hr
  elan 5+10=15 in 2 hr
  total 45 km they have coverd. remaining 45 km
  45/(40+20)=3/4 hr
  (3/4)hr*40km/hr=30km
  so they meet after 30 km in remaining 45 km
  but jim has already travelled 30 km so 30+30=60km jim has travelled when they meet
• 11 years agoHelpfull: Yes(0) No(0)
• 60 is the answer..
  tim 10+20=30km in 2 hr
  elan 5+10=15 in 2 hr
  total 45 km they have coverd. remaining 45 km
  45/(40+20)=3/4 hr
  (3/4)hr*40km/hr=30km
  so they meet after 30 km in remaining 45 km
  but jim has already travelled 30 km so 30+30=60km jim has travelled when they meet
• 11 years agoHelpfull: Yes(0) No(0)