Ms. crest surveyed her class and found that 15 out of 30 brushed there teeth more than twice a day. write a ratio as a fraction in simplest form, then write it as a % and a decimal.

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?