Tracy invited 60 people to her Christmas party. 12 people could not attend. a. What percentage did not attend the party? b. Out of the people who attended the party, 12.5 % came late. How many people arrived on time? plz help me and please put an answer for both of them

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. 16 in16\text{ in} 16 in 8 in8\text{ in} 8 in 6 in6\text{ in} 6 in 20 in20\text{ in} 20 in 12 in12\text{ in} 12 in how much space is inside the steps?