Math, asked by sutidhungana10, 2 months ago

if h be the hmbetween a and b prove 1/h-a + 1/h-b = 1/a + 1/b
plz send a photo who knows​

Answers

Answered by barani79530
18

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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