alleryవేగం 25% పెరిగితే, ఒక నిర్దిష్ట ప్రయాణానికి పట్టే సమయం ఎంత శాతం తగ్గుతుంది?
A15%
B30%
C25%
D20%
Answer & Solution
Correct answer: D. 20%
కొత్త సమయం పాత సమయంలో 1/1.25 = 0.8 వంతు అవుతుంది, అంటే 20% తగ్గుదల.
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