Question

two cars start from the same place at the same time but in opposite direction.their speed hour 80 km/hr and 65 km / hr after how long they be 850 km apart?

Answer 1

Let car 1 covered x1 distance after time t and car 2 covered x2 distance in time t.

x1 +x2 = s1 (t) + s2 (t) ⇒ 850 = t (80 + 65) ⇒ t = 850/145 = 5.86 hours

Answer 2

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