At the speed of 60 kmph, a car can finish a journey in 10 hr. To cover the same distance in 6 hr, the speed must be increased by

Options
- 20 kmph
- 30 kmph
- 40 kmph
- 50 kmph

CORRECT ANSWER : 40 kmph

Discussion Board
here we can see that distance is same

D1=D2
S1*T1=S2*T2
60*10=S2*6
S2=600/6=100 kmph

Speed must be increased by is = S2-S1=100-60=40 kmph

Ramesh Vithoba Mane 07-16-2021 05:06 AM

If time decreased so that speed increases

Distance1=Distance2
60kmph×10hr=X kmph ×6
X=100kmph

kovelakuntlashiva 09-17-2019 10:54 AM

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