sita is wife of ramesh who is father of Rakesh. suneeta is a sister of Rajeev, who is brother of Rakesh. how is Rajeev related to sita??
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Step-by-step explanation:
The first half of the distance takes d km/30 kmph = d/30 hr. The second half of the distance takes d km/50 kmph = d/50 hr. So the total time taken to cover 2d km = (d/30)+(d/50) = 80d/150 hr. = 37.5 kmph
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