ट्रू पीपल सर्च फ्रॉम द सेम प्लेस इन द सेम डायरेक्शन एंड स्पीड 8 किलोमीटर पर आवर एंड 6 किलोमीटर पर आवर रिस्पेक्टिवली फाइंड द डिस्टेंस बिटवीन द आफ्टर 12 मिनट
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B starts when A has already travelled for 2 hours and covered a distance = (2 x 30) km = 60 km
∴ Time taken by B to cover A with a relative speed of (40 - 30) km/hr = 10 km/hr =
10
60
hrs=6hrs
∴ When B overtakes A, A has travelled for 8 hrs and B for 6 hrs
It is given that B and C overtake A at the same instance Therefore when C overtakes A both of them have covered the same distance Let C take t hours to cover the same distance as covered by A in 8 hours
∴ 8 x 30 = t x 60 ⇒ t = 4 hours
∴ C started after (8 - 4 = 4) hrs after A started
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