Step-by-step explanation:
total speed = 100 + 80 = 180 km/hr
therefore,
100/180 : 80/180 = A : B
A : B = 5 : 2
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Step-by-step explanation:
total speed = 100 + 80 = 180 km/hr
therefore,
100/180 : 80/180 = A : B
A : B = 5 : 2