How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 40 m long and 16 1/2 m board? Pick:  A) 99  B) 132  C) 16  D) 10  E) 15
40 * 33/2 = 5/2 * 2 * x =&gt; x   = 132   Answer:132
<result>B</result>
How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 40 m long and 16 1/2 m board?