.A jeep covers a journey in 9 hours at a speed of 60km/hr.By how much should its speed increased so that it may take only 6 hours to finish the journey.
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Step-by-step explanation:
Given
Speed (S1)= 60 km/hr
time (t1)= 9 hrs
distance=?
Solution
Distance = S1 x t1
= 60 x 9
= 540 km
Now , t2= 6 hrs
S2 = ?
distance= 540 km
speed (S2) = distance/time
= 540/6
= 90 km/hr
speed to be increased = S2- S1
= 90 - 60
= 30 km/hr
Therefore, the speed of the jeep should be increased by 30 km/hr to finish the journey in 6 hours.
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