Shaun collects coins. he has 21 quarters and 28 pennies in a jar. what is the ratio of quarters to pennies in the jar?

Each day jake donates money to the global.

Officer brimberry wrote 32 tickets for traffic violations last week, but only 4 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

Mariano delivers newspaper. he always puts 3/4 of his weekly earnings in his savings account and then divides the rest equally into 3 piggy banks for spending at the snack shop, the arcade and the subway