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⟩ A super fast bus of KSRTC starting from Trivandrum and reaches Attingal in 45 minutes with an average speed of 40 km/hr. If the speed is increased by 10 km/hr how much time it will take to cover the same distance?(a) 34 minutes (b) 36 minutes (c) 38 minutes (d) 40 minutes

b) 36 min

d=s*t

s=40 km/hr=40/60km/min

t=45min

d=(4/6)*45=30km

now increased speed= 50 km/hr=50/60 km/min

d=30 km

t=d/s

= 36 min

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