15.16 = 15 16/100 reduces to 15 4/25
I think the answer to the questions is letter
C i could be wrong so sorry
<h3>9)</h3><h3>5 planes</h3>
<h3>10)</h3><h3>2 planes</h3>
<h3>11)</h3><h3>BCED</h3>
<h3>12)</h3><h3>Yes , they belong to plane (w)</h3>
Xy=80 would be right because it would be x=80/y and y=80/x
