Walking 5/6 of his usual speed, a man is 10 minute too late. The usual time taken by him to cover that distance is:
OPtion
1) 1 hour
2) 50 minute
3) 30 minute 30 second
4) 12 minute
5) 20 minute
6) 25 minute 45 second
7) 8 minute 20 second
8) 45 minute
9) 38 minute
10)None of these
Solution
With a speed of 5/6 th of the usual speed, the time taken is 6/5 th of the usual time.
therefore
(6/5 of usual time) - (usual time) = 10 minute
1/5 of usual time = 10 minute.
So, usual time = 50 minute
I was x years old in the year x^2. (when asked his age.)
Augustus de Morgan
Mathematics has 25%formulas, 25%proofs and apply 25%thinking and 25%efforts.
In real life situations proofs are nothing but already existed stories(we know the solutions from all experienced people).
formulas are nothing but goals. we have so many goals b