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The ratio of the number of chairs to tables

Question: The ratio of the number of chairs to tables in a restaurant is 6:1. If there are 30 chairs, how many tables are there?
A) 4
B) 5
C) 6
D) 7


Solution:

Let the number of chairs and tables be 6x and x, respectively. Given that there are 30 chairs:
6x=30
x = 30⁄6 = 5
The number of tables is:
x = 5


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