It was 3: 45 when you started mowing the lawn. you finished at 4: 30. how long did it take you to mow the lawn?

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.