One number is reciprocal to another and Arithmetic mean between them is 5/4 find them

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2