On a spelling test, Lucy spelled 4 out of 5 words correctly. If Lucy
spelled 20 words correctly, how
many words did she misspell?

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Is the square root of 4 plus the square root of 16 rational?