CBSE Class 9 Answered
very very very urgent...
Asked by anju.b.thomas | 22 Dec, 2009, 08:05: AM
Expert Answer
Let the distance from his place to school be x m.
Time required to reach school = x/20
Time required for return trip = x/30
Average speed = total distance/total time.
= 2x/(x/20 + x/30)
= 2/(1/20 + 1/30) = 24 km/hr.
Regards,
Team,
TopperLearning.
Answered by | 22 Dec, 2009, 11:26: AM
Application Videos
Concept Videos
CBSE 9 - Physics
Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:50: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:10: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by sapnamantri05 | 24 Nov, 2023, 04:54: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by ashrithpandu84 | 09 Oct, 2023, 08:09: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by janhavisoni2099 | 02 Oct, 2023, 05:20: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by durgesh21332 | 06 Sep, 2023, 06:17: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by sagrawal0081 | 18 Aug, 2023, 05:04: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by ketkiparasgandhi | 05 Jul, 2023, 08:02: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by leena3732 | 15 Jun, 2023, 09:42: AM
ANSWERED BY EXPERT