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Mr Chan bought some pencils for a group of students. If he gives them 2 pencils each, he will have 10 pencils left. If he gives them 3 pencils each, he will have none left. How many students are in the group?

Respuesta :

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Number of pencils = P 
Number of students = S 

P / S = 3 
P = 3S 

P = 2S + 10 

3S = 2S + 10 
S = 10 

He has 10 students and 30 pencils

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