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Madhur, Mukesh and Mitali ride from home to their common office with speeds in the ratio 7:8:9. If in total they take 95 minutes and 30 seconds (sum of the individual time taken) to cover the individual distance(which is same for all), then find the time taken by Mitali to cover the distance.1. 24 min2. 28 min3. 32 min4. 36 min |
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Answer» Correct Answer - Option 2 : 28 min As we know, time taken is inversely proportional to the speed if the distance covered is constant. Thus, the ratio of the time taken by Madhur, Mukesh and Mitali = (1/7):(1/8):(1/9) = 72:63:56 Let time taken by Madhur, Mukesh and Mitali be 72x, 63x and 56x min respectively. So, 72x + 63x + 56x = 95.5 ⇒ x = 95.5/191 = 0.5 Hence, the time taken by Mitali = 56x = 56 × 0.5 = 28 min |
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