Slack Thinking

http://www.top10ofindia.com/1.htm http://www.careerlauncher.com/mba/news/knowledgecenter/analysis_IRMA.html A boy goes from his house to his school daily by a motorbike. He drives the motorbike at three different speeds a, 2.5a, 4a km/hr for three different duraions during the journey. He definitely knows the time intervals for which he should drive his motorbike at each of these speeds so as to reach the school on time. Q. On one particular day he started 20 minutes late from his house and hence extra time for which he drove his motorbike at 2.5 km/hr is 6 minutes. Find the extra time he has to drive at 4a km/hr to reach school on time. 1. 11/3 min 2. 15/4 min 3. 13/3 min 4. 14/3 min 5. can't be determined. Q. Usually the time for which the boy drives at 'a' km/hr, '2.5a' km/hr and '4a' km/hr is in the ratio 2:1:3. If this ratio becomes 4:1:1, the boy reaches 30 minutes late. Find by how much time(approx) the boy will be late to school if this ratio is 3:2:1. 1. 22,5 min 2. 11.7 min 3. 14.6 min 4. 19.7 min 5. can't be determined