alleryजर वेग 25% ने वाढवला, तर ठरावीक प्रवासासाठी लागणारा वेळ किती टक्क्यांनी कमी होतो?
A15%
B30%
C25%
D20%
Answer & Solution
Correct answer: D. 20%
नवीन वेळ पूर्वीच्या वेळेच्या 1/1.25 = 0.8 पट होतो, म्हणजेच 20% ची घट.
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