Question

3. A car can finish a certain journey in 9 hours at the speed of 72 km/h. By how much should its speed be
increased so that it may take only 8 hours to cover the same distance?​

Answer 1

8

Step-by-step explanation:

Total hours 9

total speed 72km/h

Answer 2

=>Answer:-

  v= 81km/hr

=>Step-by-step explanation:-

  x = vt

  x = 72×9

  again x= vt

 72×9= v×8

 v= 81km/hr

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