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3 years ago

13

Tim's age is two thirds of sara's age. sara's age is three fifths of mark's age. mark is 9 years older than tim. how old is sara

? answer

1 answer:

sergejj [24]3 years ago

8 0

T = Tim, S = Sara, M = Mark

T = 2/3S
S = 3/5M, M = 5/3S
M - 9 = T
5/3S - 9 = 2/3S
S = 9

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