Sakib N.
asked 07/12/19
Walking 6/7 th of his usual speed, a man is 12 mins too late. What is the time taken by him to cover that distance?
Mark M.
answered 07/12/19
Mathematics Teacher - NCLB Highly Qualified
d = r • t
(6r/7)(t + 1/5) = r • t
6rt / 7 + 6r / 35 = r • t
30rt + 6r = 35 rt
6r = 5rt
6 / 5 = t
1 hour and 12 minutes
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