A car covers 30 km at a uniform speed of 60 km/h and the next 30 km at a uniform speed of 40 km/h. Find the total time taken by the car.
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Answer:
D=distance
S=speed
T=time
THEN
D1= 30 KM/HR
S1= 60 KM/HR
T1= 30/60
=1/2 HR
D1=30 KM/HR
S1=40 KM/HR
T1=30/40
=3/4 KM/HR
TOTAL TIME = T1 + T2
= 1/2 + 3/4
= 5/4 HR
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