A train is going at ⅓rd of its usual speed and it takes an extra 30 minutes to reach its destination.
Find its usual time to cover the same distance.
(with explanation please)
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Step-by-step explanation:
A train is going at 1/3 of its usual speed and it takes an extra 30 minutes to reach its destination. Find its usual time to cover the same distance. Here, we see that the distance is same. s*t = (1/3)s*(t+30) → t = t/3 + 10 → t = 15.
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