Question

Two men start from Jaipur and Punjab respectively and walk towards each other at a speed of 9 kmph and a certain speed respectively. Af ter meeting, they complete their journey in 4 hours and 9 hours respectively. Find the speed of 2nd person. एक व्यक्ति जयपुर से पंजाब के लिए जाता है तथा उसी समय दूसरा व्यक्ति पंजाब से जयपुर के लिए चलता हैं यदि मिलने के समय के बाद वे अपनी दूरी क्रमश: 4 घंटे व घण्टे में समाप्त करते हैं तथा पहले व्यक्ति की चाल 9 किमी./घण्टा है तो दूसरी व्यक्ति चाल (किमी. घंटे) ज्ञात कीजिए (A) 10 (B) 5 (C) 8 Dr6

Answer 1

Step-by-step explanation:

I hope help you

thank you

Answer 2

speed of 2nd person is 6 kmph

Step-by-step explanation:

given data

speed of train a s1 = 9 kmph

time taken train a t1 =  4 hours

time taken train a t2 = 9 hours

solution

we get here speed ratio that is

$\frac{S1}{S2} = \sqrt{\frac{t2}{t1} }$   ...................1

put here value

$\frac{9}{S2} = \sqrt{\frac{9}{4} }$    

s2 = 6

so that speed of 2nd person is 6 kmph    

so correct option is (D) 6

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