Irene R. answered 03/28/20
BS in Mechanical Engineering and Certified math teacher for 13 years
First, 1 1/5 is equivalent to 1.2.
Since you know that there are 126 calories in 1 1/5 cups (or 1.2 cups) of cereal , you can determine the number of calories in one cup by dividing 126 by 1.2:
126 / 1.2 = 105 calories in one cup
Now for 9 cups, multiply 105 by 9 :
105 • 9 = 945 calories in 9 cups of cereal