Question 799016
s two point questions and d four point
2s+4d=100
s+d=46 
so s=46-d
subst for s: 2*(46-d) + 4d =100
92 - 2d + 4d =100
2d = 8
d=4
s=46-4=42
There are 4 4-point and 42 2-point questions

Check: 16 + 84 = 100