a car travels 30 km at a uniform speed at a 40 km /hr and the next 30 km at a uniform speed of 24km /hr
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T1=30/40=3/4 h
3/4×60 = 45 min
T2 = 30/24 =5/4 h
5/4×60=75min
T = T1 + T2
T = 75+45 min
T = 120 min = 2hrs
3/4×60 = 45 min
T2 = 30/24 =5/4 h
5/4×60=75min
T = T1 + T2
T = 75+45 min
T = 120 min = 2hrs
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