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The average(arithmetic mean) life expectancy at birth for a person bo
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01 May 2021, 07:40
01 May 2021, 07:40
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Question Stats:
85% (01:17) correct
14% (00:23) wrong based on 7 sessions
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The average(arithmetic mean) life expectancy at birth for a person born in 1980 was approximately how many more years than for a person born in 1900?
(A) 20
(B) 22
(C) 24
(D) 26
(E) 30
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Re: The average(arithmetic mean) life expectancy at birth for a person bo
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01 May 2021, 14:50
01 May 2021, 14:50
Carcass wrote:
The average(arithmetic mean) life expectancy at birth for a person born in 1980 was approximately how many more years than for a person born in 1900?
(A) 20
(B) 22
(C) 24
(D) 26
(E) 30
Average age in 1900 = \(\frac{46.3 + 48.3}{2} = 47.3\) years
Average age in 1980 = \(\frac{70 + 77.5}{2} = 73.75\) years
Difference = \(73.75 - 47.30 = 26.45\) years
Hence, option D
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