7. The ratio between the speeds of two trains is 7: 8. If the second train runs 400 kms in 5 hrs, what is the speed of the first train? a) 10 km per hour b) 70 km per hour c) 50 km per hour d) None of the above
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The thickness of two molecules of papmitate in lipid bilayer?
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Speed = Distance/ Time
2nd train:— speed = 400/5
= 80 km/hr
1st train speed = (80/8)*7 km/hr
= 70 km/hr
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