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If the sum of the reciprocals of two consecutive odd integers is $\frac{12}{35}$, then the greater of the two integers is:
in A Level Maths by Diamond (50,514 points) | 33 views

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Let the smaller of the two odd integers be n, such that the larger one is n + 2

(1/n) + (1/(n + 2) = (12/35)

((n + 2 + n)/(n(n+2)) = (12/35)

((2n + 2)/(n(n+2)) = (12/35)

Equating the numerators both sides give: 2n + 2 = 12

2n = 12 - 2 = 10

n = 5

Therefore the greater of the two integers is n+2 = 5 + 2 = 7.
by Silver Status (29,623 points)

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