Question
Riordan, Tommy and Joshua scored a total of 207 marks for their Chinese exam. Tommy scored 47 marks. Joshua scored 18 more marks than Tommy. How many marks did Riordan score?
4 m

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Riordan, Tommy and Joshua scored a total of 207 marks for their Chinese exam. Tommy scored 47 marks. Joshua scored 18 more marks than Tommy. How many marks did Riordan score?