Question
The average height of a group of 30 students is 160
The average height of a group of 30 students is 160
cm. After replacing 2 students of height (x – 8) and (x + 5) cm respectively, with a student of height (x – 3) cm, the average height of the group becomes (x – 30)
cm. What is the value of 'x'?
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