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Time Distance and Speed
Paul started from home with his bicycle travelling 6 km/hr at 12:00 pm and John started at 13:30 travelling 9 km/hr. At what time John will be 3 km ahead of Paul?
Read Solution (Total 9)
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- Paul moves 9km in 12-13:30
so, john will cover this distance of 9km at 2:30pm
john and paul will cover equal distance at 4:30pm
john covers 9km in 1hr and paul cover 6km in 1hr
so by this after 1hr i.e at 5:30 john will be 3km ahead of paul
becoz 9-6=3
Ans is 5:30pm - 10 years agoHelpfull: Yes(24) No(8)
- distance covered by paul in 1.5 hours= 6*1.5=9km
relative speed 9-6=3km/hr
total dis coverde by john is 9+3= 12km
so time=12/3=4hrs
17.30 ahead of paul - 10 years agoHelpfull: Yes(18) No(0)
- at 13.30 hr Paul travels 9km
let in x hr john will be 3km ahead
then
9x-(6x+9)=3
x=4
so at 13.30+4=17.30 john will be 3hr ahead from Paul
- 10 years agoHelpfull: Yes(17) No(0)
- 19:30 ans
- 10 years agoHelpfull: Yes(1) No(4)
- Ans is 15:30
- 9 years agoHelpfull: Yes(1) No(1)
- paul cover 1.5*6=9km
but john is 3 km ahead of paul
therefore
total distance is 12km
relative speed is 3kmph
=>12/3=4 hrs
i.e 13:30+4=17:30 - 9 years agoHelpfull: Yes(1) No(0)
- 17:30 john will be 3km ahead
- 10 years agoHelpfull: Yes(0) No(0)
- total 4 digit number will be 4*7=42
total 5 digit number up to 19000=1*9*10=90
so total palindrom=132 - 10 years agoHelpfull: Yes(0) No(2)
- ans is 19:30
as at 18:30 they will be at same location and after 1hr john will be 3km ahead of paul... - 9 years agoHelpfull: Yes(0) No(0)
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