Average age of students of an adult school is 40 years. 120 new stude – McqOptions

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1.	Average age of students of an adult school is 40 years. 120 new students whose average age is 32 years joined the school. As a result the average age is decreased by 4 years. Find the number of students of the school after joining of the new students:
A.	240
B.	360
C.	120
D.	260
Answer» B. 360

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