Anumber is such that its ten digit is twice its unit digit. prove that the number itself must be seven times the sum of its digit

Write 17/20 as a decimal and as a percent.

Sara can take no more than 22 pounds of luggage on a trip.her suitcase weighs 112 ounces.how many more pounds can she pack without going over the limit?

Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?