Question

If abhisekh travels at a speed of 25 km/hr in his car ,he reaches office 4 minutes late. If he drives at a speed of 30km/hr ,he reaches office 10 minutes early. Find the distance between his office and his home.​

Answer 1

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let______x be required distance.

x/s=t

now

by 1 st condition...

x/25=t+1/15_________( 4 minutes=1/15 hours)

and by second equation

x/30=t-1/6

from above equations,

x/25 -1/15=x/30 +1/6

so

x=35 km

ans is 35 km