If x of 16 is a false fraction, then x + 17 of 1 must be a true fraction

If x of 16 is a false fraction, then x + 17 of 1 must be a true fraction

absolutely right
x>16
therefore
x+1>17
So 17 out of X + 1 is a true fraction

(1) What is the simplest score of 50 out of 80 and 11 out of 16? Who is the biggest?
(2) What are the simplest scores of 10 out of 14 and 50 out of 90? Who is the biggest?

(1) What is the simplest score of 50 out of 80 and 11 out of 16? Who is the biggest?
50 out of 80 = 5 / 8
50 out of 80 < 11 out of 16
(2) What are the simplest scores of 10 out of 14 and 50 out of 90? Who is the biggest?
10 out of 14 = 5 / 7
50 out of 90 = 5 / 9
10 out of 14 > 50 out of 90

The comparison size is 50 in 80 and 11 in 16, 10 in 14 and 50 in 90, 16 in 24 and 12 in 30

50 out of 80 = 5 / 8 = 10 / 16, 11 out of 16 = 11 / 16
10/165/9
16 of 1 and 24 = 1 + 2 / 3 = 1 + 10 / 15
12 out of 1 and 30 = 1 + 3 / 5 = 1 + 9 / 15
1+10/15>1+9/15