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Math·Problem-Solving and Data Analysis·Ratios, rates, proportional relationships, and units

easy

At a particular time, the ratio of children to adults at a restaurant is 1 to 18. If there are $x$ children at the restaurant at this time, which of the following expressions represents the number of adults at the restaurant?

A

$x+18$

B

$18x$

C

$\frac{18}{x}$

D

$\frac{x}{18}$