Weight of a person can be expressed as a function of their age. The function…
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Weight of a person can be expressed as a function of their age. The function usually varies from person to person. Suppose this function is identical for two brothers, and it monotonically increases till the age of 50 years and then it monotonically decreases. Let a1 and a2 (in years) denote the ages of the brothers and a1 < a2.
Which one of the following statements is correct about their age on the day when they attain the same weight?
- A.
a1 < a2 < 50
- B.
a1 < 50 < a2
- C.
50 < a1 < a2
- D.
Either a1 = 50 or a2 = 50
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