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Mensah is 5 years old and Joyce is thrice as old as Mensah. In how many years will Joyce be twice as old as Mensah?​

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sqdancefan

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Answer:

  5 years

Step-by-step explanation:

We want to find x such that ...

  2(5 +x) = 15 +x . . . . . after x years, Joyce will be 2 times as old

  10 +2x = 15 +x . . . . . eliminate parentheses

  x = 5 . . . . . . . . . . .  subtract x+10

Joyce will be twice as old as Mensah in 5 years.

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