Rick sold a total of 75 books during the first 22 days of May. If he continues to sell books at the

Rick sold a total of 75 books during the first 22 days of May. If he continues to sell books at the same rate, how many books will he sell during the month of May?

Set up a proportion of days to books where n is the number of books sold in May:
22/31 = 75/n

Using our proportion calculator and rounding to the next integer, we get:
n = 106