Question
Download Solution PDFएक व्यक्ति 40 किमी/घंटा की गति से गाड़ी चलाकर ऑफिस 1 मिनट पहले पहुँच जाता है, जबकि 36 किमी/घंटा की गति से गाड़ी चलाने पर वह ऑफिस 3 मिनट देर से पहुँचता है। घर से ऑफिस जाने में वह कितनी दूरी (किमी में) तय करता है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
40 किमी/घंटा की गति से चलने वाला व्यक्ति 1 मिनट पहले कार्यालय पहुँचता है, जबकि 36 किमी/घंटा की गति से चलने पर वह 3 मिनट देरी से पहुँचता है।
प्रयुक्त अवधारणा:
1. 1 मिनट = 60 सेकंड
2. दूसरी = गति × समय
3. 1 मीटर/सेकंड = 18/5 किमी/घंटा
4. 1 किमी = 1000 मीटर
गणना:
40 किमी/घंटा = 40 × 5/18 = 100/9 मीटर/सेकंड
36 किमी/घंटा = 36 × 5/18 = 10 मीटर/सेकंड
3 मिनट = 180 सेकंड
मान लें कि दूरी D मीटर है।
प्रश्न के अनुसार,
\(\frac {D}{10} - \frac {D}{\frac {100}{9}} = 180 + 60 \)
⇒ \(\frac {D}{10} - \frac {9D}{100} = 240\)
⇒ \(\frac {D}{100} = 240 \)
⇒ D = 24000
अब, दूरी = 24000 ÷ 1000 = 24 किमी
∴ तय की गयी दूरी 24 किमी है।
Last updated on Jun 26, 2025
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