The average of the marks of 28 students in Mathe-matics was 50. When 8 – McqOptions

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1.	The average of the marks of 28 students in Mathe-matics was 50. When 8 students left the school, then the average increased by 5. What is the average of the marks obtained by the students who left the school
A.	50.5
B.	37.5
C.	42.5
D.	45
Answer» C. 42.5

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