Jenny walked 2.5 miles in 50 minutes . at this rate , how many minutes did it take her to walk 1 mile ?
a. 15
b. 20
c. 25
d. 30

Which one ? is the answer and how to find this answer

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. how much space is inside the steps?

Someone me i need with this stuff