Answer:
Number of 2 mark questions
30
Number of 4 mark questions
10
Explanation:
x+y=40
2x+4y=100
y=40-x
2x+4(40−x)=100
2 x + 160 − 4 x = 100
2 x − 4 x = 100 − 160
−2x=−60
x=−60−2=30
x=30
Number of 2 mark questions = 30
Number of 4 mark questions = 10