Respuesta :
Well.... 22 beams per floor. so 22(6) = 132
then, after having 700 beams, she used 12, so: 700 - 132 = 568
So. 568 beams remain.
then, after having 700 beams, she used 12, so: 700 - 132 = 568
So. 568 beams remain.