4 divided by the sum of 2 and 12

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Acollege is selling tickets for a winter fund-raiser. one day, krissa sold 14 adult tickets and 8 student tickets for a total of $376. the next day, she sold 7 adult tickets and 11 student tickets for a total of $272. krissa wanted to find the price of one adult ticket, a, and the price of one student ticket, s. she wrote and solved the following system of equations.

Ineed ! what is the connection between ratios, fractions, and percents? give an example with your answer.