Answer:
Let car takes x hours.
Time (in hours) 2 x Speed (in km/h) 60 80
If the speed of car increases, then the time taken to reach a destination will decrease. Hence, it is a case of inverse proportion. So, \[x\times 80=2\times 60\] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,x=\frac{2\times 60}{80}=\frac{3}{2}\] \[=1\frac{1}{2}\] Thus A car takes \[=1\frac{1}{2}\] hours to reach the destination.
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