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The average age of three people running for election is 42. A fourth person joins the race and the average drops to 40. What is the fourth person's age?
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The average age of three people running for election is 42. A fourth person joins the race and the average drops to 40. What is the fourth person's age?
asked
Jul 17, 2022
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The average age of three people running for election is 42. A fourth person joins the race and the average drops to 40. What is the fourth person's age?
Mathematics
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Anupama
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1
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Call the four people
and
.
We know:
and
Thus:
Tsu
answered
Jul 21, 2022
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Tsu
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