Alex bought 150 chocolates but he misplaced some of them. His mother asked him how many chocolates were misplaced and he gave the following answer to her: If you count in pairs, one remain If you count in threes, two remain If you count in fours, three remain If you count in fives, four remain If you count in sixes, five remain If you count in sevens, no chocolate remain.
Can you analyze the statements and tell us how many chocolates were lost?
A man drive his car to the office at 20miles/hr. After reaching office, he realize that its a new year holiday so he went back home at a speed of 30miles/hr. Discounting the time spent in the stoppage what was his average speed of his journey ?