To find this answer, we need to multiply 3.57 by 12.

Therefore, 12 planks will cost $42.84.
D. It Is The Most Fitting Answer. The Other 3 Equal More Than Needed.
Solutions
<span>To solve the problem our first step is to find the prime factorization of each number. </span>
4 = 2²
<span>5 = 5 </span>
<span>6 = 2 x 3
</span>
Calculations
<span>LCM = 2² x 3 x 5 = 60 </span>
The answer is 3 because 48 / 16 = 3