Assuming you mean to exhaust the time allotted, figure the time used on non-math questions as x, so
50*2x + 300x = 180
400x = 180
x = 9/20
50*18/20 = 45
So, (A)
In a 3 hour examination of 350 questions, there are 50 mathematics problems. If twice as much time should be allowed for each problem as for each of the other questions, how many minutes should be spent on the mathematical problems?
not just and answer please
A.45
B.52
C.60
D.68
E.72
1 answer
1 answer