Linear equation
Mahesh made a journey of 146 km.he drives for 2 hours in day light and then 1½ hours in darkness at an Grace period used by 10 k/h from the day light speed. find his speeds in day light and in darkness.
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Answer:
distance distance covered in daylight=146km
time taken to cover the distance=2hrs
speed =distance÷time
speed =146÷2
=73km/h
distance cover in dark light=146-10
=136km
speed taken to cover the distance=1hole1/2=3/2hrs
speed =136÷3/2=90.6km/h
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