worth 50 points . see picture

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.]

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

A50% increase followed by 33 1/2% decrease