Question
Download Solution PDFएक पुरुष एका ठराविक वेळेत प्रवाहाच्या दिशेने 8 किमी अंतर पार करू शकतो आणि तो समान वेळेत प्रवाहाच्या विरुध्द दिशेने 6 किमी अंतर पार करू शकतो. जर त्याने प्रवाहाच्या विरुध्द दिशेने 24 किमी आणि प्रवाहाच्या दिशेने समान अंतर हे \(1\frac{3}{4}\) तासांमध्ये पार केले, तर प्रवाहाचा वेग किती (किमी/तास) आहे?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
एकूण अंतर = 24 किमी
घेतलेला वेळ = 7/4 तास
वापरलेली संकल्पना:
वेग = D/t
D = अंतर
t = वेळ
गणना:
समजा पुरुष आणि प्रवाह यांचा वेग अनुक्रमे v आणि s आहे
प्रश्नानुसार,
\({8\over v \;+\;s} = {6\over v \;-\;s}\)
⇒ 8v - 8s = 6v + 6s
⇒ 2v = 14s
⇒ v : s = 7 : 1
समजा पुरुषाचा वेग = 7x
प्रवाहाचा वेग = x
म्हणून,
24/8x + 24/6x = 7/4
⇒ 3/x + 4/x = 7/4
⇒ 7/x = 7/4
⇒ x = 4
⇒ प्रवाहाचा वेग = 4 किमी/तास
∴ प्रवाहाचा वेग हा 4 किमी/तास आहे
Last updated on Jun 13, 2025
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