Preston reads for 20 minutes each night and practices his math facts for 5 minutes each night. after several days, he had practiced maths facts for 45 minutes. how many minutes did preston read in the same time period?

performances and sculptures

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.