Solve this.. Its urgent...
(Not necessarily in Hindi)
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Answered by
4
Answer:
20 km/hr
Step-by-step explanation:
distance = 3km
1st speed =10 km/hr
time =3/10 hr
2nd speed =20km/hr
time= 3/20 hr
3rd speed = 30 km/hr
time =3/30 hr
4th speed =60 km/hr
time= 3/60
total distance =3+3+3+3=12 km
total time= 3/10 +3/20 +3/30 +3/60
= (3/60)(6 +3 +2 +1)
=12/20
=3/5
speed= 12/(3/5) = 20 km/hr
chandresh126:
Ops.. it's my mistake, i make some silly calculation error in solving that question... btw Thank-you for thw help Sir.
Answered by
3
Answer:
20 km/hr........
.
...........
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