the koala bear is 21 inches tall. the elephant is 9 times as tall as the koala. How tall is the elephant?

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

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?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers