Question
βAβ and βBβ started moving towards each other at
same time with a speed of 21 km/hr and 15 km/hr, respectively. If the distance covered by βAβ is 15 km more than that by βBβ, when they meet then find the initial distance between them.Solution
Ratio of distance travelled by βAβ and βBβ = 21:15 = 7:5 Required distance = 15 Γ 12 = 180 km
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