alleryयदि किसी निश्चित मार्ग पर चाल में 20% की कमी होती है, तो यात्रा के समय में कितने प्रतिशत की वृद्धि होगी?
A15%
B20%
C30%
D25%
Answer & Solution
Correct answer: D. 25%
समय पुराने समय का 1/0.8 = 1.25 गुना हो जाता है, जो कि 25% की वृद्धि है।
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