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5 X 3 =151. Nagma can swim 100 metres in 3 minutes 15 seconds and Lata in 2 minutes 55is faster and by how many seconds? |
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Answer» Answer: Nagma can swim 100 metres in 3 minutes 15 seconds and LATA in 2 minutes 55 is faster and by how many seconds? Velocity of man =25 m/min when no stream and 20 m/min when there is water flow of speed x m/min. Hence, 25²- x² = 20 ∴x=15 m/min=0.25 m/s |
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