Q10 of 19 Page 59

Identify the variation and solve. It takes 5 hours to travel from one town to the other if the speed of the bus is 48 km/hr. If the speed of the bus is reduced by 8 km/hr, how much time will it take for the same travel?

As we know that,

Distance=


Distance= 5 × 48 {time =5hr and speed =48km/hr}


Distance = 240 km


Now after reducing speed by 8km/hr we have


speed = 40 km/hr. and distance = 240km


Then time =


Time =


Time = 6 hrs.


So time is inversely proportional to speed. If speed is increasing, time is decreasing and if time is increasing speed is decreasing.


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