The average age of a group of 7 atheletes is 22 years. An atheletes whose age is 37 years joins the group. Will the average age of the group increases or decreases ? Find out by how much ?
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Answer:
Avg Age will increase. New Avg Age = 23.875
Step-by-step explanation:
Total age of 7 people = 7×22 = 154
Total age when new person added = 154 + 37 = 191.
New Avg Age = 191 ÷ 8 = 23.875
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