Question 1094424
Here are the three equations.
16hd+14hb+8cs=117.50
10hd+13hb+5cs=87
4hd+7hb+7cs=63.25
or as a matrix
16 14 8 | 117.5
10 13 5 | 87
4  7  7 | 63.25
You can use substitution, elimination or matrices to solve