A man covers a distance of 110 km between two cities in 10
hours. He travelled partly on foot at 9 km/hr and partly on a
bicycleat 15 km/hr. Find the distance travelled on foot, एक आदमी
10 घंटे में दो शहरों के बीच 110 किमी की दूरी तय करता है। उन्होंने आंशिक
रूप से 9 किमी/ घंटा की पैदल यात्रा की और आंशिक रूप से 15 किमी/घंटा
की साइकिल पर यात्रा की। पैदल दूरी तय की।
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Total distance = 110 km; Total time taken = 10 h
Speed of walking = 9 km/h ; Speed cycling= 15 km/h
Let t be the time taken for walk.
Time taken for cycling = 10-t
110= t x 9 + (10-t) x 15
t = 40/6 = 20/3
Verification:
9 x t = 9 x (20/3) = 60 km
(10-t) x 15 =[10-(20/3)] x 15 = 50 km
50+60 =110
Ans: Distance traveled on foot = 60 km
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