We know that [the area rectangular cookie sheet]=30*50--------> 1500 cm²
<span>let's assume that each biscuit is inscribed in a square of 8 cm side in the side of 30 cm </span>can be placed -----> 30/8--------> 3.75-----> 3 in the side of 50 cm can be placed -----> 50/8--------> 6.25-----> 6
<span>The maximum number of complete biscuits is 3*6------> 18 biscuits</span> the answer is 18 biscuit