SOLUTION: The number of boys in Mr. Marks class was 18 less than twice the number of girls. He had a total of 111 students in his class. How many girls were in his class?

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Question 667509: The number of boys in Mr. Marks class was 18 less than twice the number of girls. He had a total of 111 students in his class. How many girls were in his class?
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

The number of boyshighlight%28y%29 in Mr. Marks class was 18 less than twice the number of girlshighlight%28x%29.

Question states*** total of 111 students 

  x + y = 111    y+=+2x-18

 x + (2x-18) = 111

    3x = 129

     x = 43, number of girls.  68 Boys