Answer :
The easiest way to count it is to divide Alice's stamps by 8 to see how many is 1/8 part of the ratio:
184 / 8 = 23
It means that Bernice has 23 * 9 = 207 stamps and Cheryl has 23 * 18 = 414 stamps.
184 / 8 = 23
It means that Bernice has 23 * 9 = 207 stamps and Cheryl has 23 * 18 = 414 stamps.