It is C, because to find volume you must use the formula <em>l</em><em>×</em><em>w</em><em>×</em><em>h</em>, or length times the width times the height. (<em>cm</em><em>^</em><em>3</em><em>)</em>
So, 60 dollars is 40% of the original price. So 30 dollars is 20% of the original price, and 150 dollars is 100% of the original price. So, the original value of the rice cooker is 150 dollars.