A ball bounces 2/3 of the distance it has fallen. If a ball is dropped from a height of 18feet, how high will it go on the third bounce?

"First  bounce        =     2/3 * 18       =   12

    second bounce    =    2/3 * 12         =   8  

     third bounce         =    2/3 *  8

                                    =    5 1/3 ft"