The City Sights tour company had the same ratio of tourists to guides on both days this weekend. On Saturday, there were 120 tourists and 18 guides. OnSunday, there were 40 tourists.

6 guides

Step-by-step explanation:

Question wants to know the number of Guides present on Sunday.

On Saturday there were 120 tourists and 18 guides. The ratio was therefore:

120 : 18

On Sunday, the ratio must be the same and there are 40 tourists. You can solve this using direct proportion and multiplying:

120 : 18

40   :  x

120x = 18 * 40

x = 720/120

x = 6 guides

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.