The triangle shown below consists of four small triangles of equal area. If each of the four small triangles are to be filled with one of the four colors (red, green, blue and yellow), such that no two adjacent triangles can have the same color, then find the number of possible combinations.

Bakers are needed to prepare for a Christmas party. Each baker can make either 7 large cakes per hour, or 45 small cakes per hour. The kitchen is available for 3 hours and 140 large cakes and 990 small cakes are needed. How many bakers are required?