There are a total of 16 chocolates - 4 each in the flavors of grape, orange, cherry and strawberry. There are also 5 children. If each child is allowed to choose their own favorite flavor, what is the probability that all of them will get flavors of their choice?
If Joel drives at four fifth of his usual speed, he covers a certain distance in 3 hours more than the time he takes while driving at his usual speed. Find the time taken by him to cover this distance with his usual speed.