A car can reach a certain place in $12$ hours at the speed of $60 k m / h r$ . By how much should the speed be increased so that it completes the journey in $10$ hours ?

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Solution

Speed of the car $= 60$ km/hr
Time of the car $= 12$ hours
Distance to be travelled $= (60 \times 12)$ km
$= 720$ km
Speed to be increased in $10$ hours $= [\frac{720}{10}]$ km/hr
$= 72$ km/hr
Difference in the speed $= (72 - 60)$ km/hr
$= 12$ km/hr.

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A car can reach a certain place in 12 hours at the speed of 60 km/hr. By how much should the speed be increased so that it completes the journey in 10 hours ?

Speed of the car=60km/hrTime of the car=12 hoursDistance to be travelled=(60×12)km=720kmSpeed to be increased in 10 hours=[72010]km/hr=72km/hrDifference in the speed=(72−60)km/hr=12km/hr.

A car can reach a certain place in $12$ hours at the speed of $60 k m / h r$ . By how much should the speed be increased so that it completes the journey in $10$ hours ?

Speed of the car $= 60$ km/hr
Time of the car $= 12$ hours
Distance to be travelled $= (60 \times 12)$ km
$= 720$ km
Speed to be increased in $10$ hours $= [\frac{720}{10}]$ km/hr
$= 72$ km/hr
Difference in the speed $= (72 - 60)$ km/hr
$= 12$ km/hr.