Reasoning
If we call the number of unknown minutes T.
Between four o'clock and eight o'clock, there are 240 minutes.
There is some point between these two times, before which we have 3 lots of T, and after which we have one lot of T plus 40 minutes.
Therefore, in the 240 minutes, there are 4 lots of T plus 40 minutes.
240 = 4 x T + 40.
Therefore, T = 50 minutes.
?
Puzzle 2
Hidden in the grid below are three boys names. Starting at any point, trace out the path of a chess knight. The last letter of one name starts the next one. What are the names?
