How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 30 m long and 16 1/2 m board? Answers.
A) 99
B) 626
C) 27
D) 26
E) 28
30 * 33/2 = 5/2 * 2 * x =&gt; x   = 99   99nswer: 99
<result>A</result>
How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 30 m long and 16 1/2 m board?