Answer:
6
Explanation:
Clarence paid twice what Daniel paid, so paid 2×$6.06 = $12.12.
We assume that Matthew paid what Daniel and Clarence did not, so Matthew paid ...
$20.20 -6.06 -12.12 = $2.02
Then the ratio of Clarence's bill to Matthew's was ...
$12.12 / $2.02 = 6
The ratio of Clarence's pay to Matthew's pay is 6.