Question

In a journey of 450km a person complete its 150km in 3hours.Then he increases his speed by 20%.How long time does it take to complete all the journey​

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Answer 1

450 km

150/3=50km/hr

50+20%

1/5*50=10

50+10=60

60km/hr

450-150=300

300/60=5

5 hours