Question
Walking `6/7` th of his usual speed , a man is 12 minutes too late . The usual time taken by him to cover that distance is :
Answer: Option B
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New speed = `6/7` of usual speed.
New time = `7/6` of usual time.
`:.` (`7/6` of usual time ) - (usual time ) = `1/5` hr.
`rArr 1/6` of usual time = `1/5 hr rArr ` usual time = ` 6/5 hr` = 1 hr- 12 min.
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