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Aptitude Day 277

Answers of Day 276: 1. 40 km. 
                                    2. 30 km/hr.

Problems on Time and Distance:

1. Excluding stoppages, the speed of a bus is 48 km/hr and including stoppages, it is 40 km/hr. For how many minutes does the bus stop per hour?
Solution:
                 Due to stoppages, it covers 8 km less.

                 Time to cover that 8 km = 8/48 *[60] 
                                                        = 10 minutes.

2. In covering a certain distance, the speeds of A and B are in the ratio of 2: 4. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is:

Solution:
                  The time ratio is 4: 2.

                   4x- 2x = 30/60.
                   x = 1/4.

                   4x = 4(1/4) = 1 hour.


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