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Mathematics 37 Online
OpenStudy (anonymous):

Miriam is four years older than Ricardo. Ten years ago Miriam was 3 times as old as Ricardo was then. a. How old are they now?

OpenStudy (anonymous):

let x be Miriam's age, then Ricardo's age = x-4 tens years ago implies: x-10 = 3(x-4-10) now simplify and solve for x x-10 = 3x -42 then 2x = 32 which implies x = 16 so Miriam is 16 years old and Ricardo is 12 years old

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