Answer:
x = 5
Step-by-step explanation:
These triangles are similar, so they are in proportion to each other. Because of this we can say 
(the lengths of the vertical sides) = 
(the lengths of the hypotenuses). If we solve by cross-multiplying the numbers and then dividing we get x = 5.
If you would like to know how many pizzas in all were made last week, you can calculate this using the following steps:
95% of x = 19
95/100 * x = 19 /*100
95 * x = 19 * 100 /95
x = 19 * 100 / 95
x = 20
Result: 20 pizzas were made last week.
