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The ratio of Lily's age to Fanny's age is 1:2 now. In 9 years' time,the ratio of Lily's age to Fanny's age become 3:5. How old is Lily now?
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The ratio of Lily's age to Fanny's age is 1:2 now. In 9 years' time,the ratio of Lily's age to Fanny's age become 3:5. How old is Lily now?
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Apr 5, 2019
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The ratio of Lily's age to Fanny's age is 1:2 now. In 9 years' time,the ratio of Lily's age to Fanny's age become 3:5. How old is Lily now?
Mathematics
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Enfield Li
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L=1F=2L is half that of F
9 years later
L=3F=5
L is 60% that of L's ageI think it's 10 bc there has to be at least 9 years old
Christian Smith
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Apr 8, 2019
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L -Lily's age now
F - Fanny's age now
L:F = 1:2
F=2L
(L+9) -Lily's age in 9 years
(F+9) = (2L + 9) - Fanny's age in 9 years
(L+9) : (2L + 9) = 3 : 5
5(L+9) =3 (2L + 9)
5L + 45 = 6L + 27
L = 18
Lily now is 18 years old.
Tim Park
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Apr 10, 2019
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Tim Park
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