The average score of there boys in mathematics is 30. When the score o – McqOptions

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1.	The average score of there boys in mathematics is 30. When the score of a fourth boy is added to the total score of the three boys, the average is lowered to 25. What is the score of t he fourth boy?
A.	10
B.	15
C.	20
D.	25
Answer» B. 15

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