4+6 = 10>11 so 4 isnt the answer
5+6=11>or = 11 is true
6+6=12>11 is not true
7+6=13>11 is not true
the answer should be B
423 = 100 + 100 + 100 + 100 + 10 + 10 + 3
hope this helps
Let x be the number of 5 points question.
Let y be the number of 2 points question.
Total number of questions is 38
x + y = 38
Total points is 100
5x + 2y = 100
x + y = 38 ------------- (1)
5x + 2y = 100 ---------(2)
From (1):
x + y = 38
x = 38 - y -------------- sub into (2)
5(38 - y) + 2y = 100
190 - 5y + 2y = 100
3y = 90
y = 30 ------------------ sub into (1)
x + 30 = 38
x = 38 - 30
x = 8
There are 8 5-point questions and 30 2-point questions
