How many paying stones, each measuring 2 m * 1 m are required to pave a rectangular court yard 30 m long and 16 m board? Choose the correct choice from the following answers:  A) 240  B) 18  C) 26  D) 17  E) 12
30 * 16 = 2 * 1 * x =&gt; x   = 240   240nswer: 240
<result>A</result>
How many paying stones, each measuring 2 m * 1 m are required to pave a rectangular court yard 30 m long and 16 m board?