peter is 7 years old. her sister’s age is 8 years more thann trice his age . how old his sister?

1 thought on “peter is 7 years old. her sister’s age is 8 years more thann trice his age . how old his sister?”

1. let Peter’s sister age be x years then x= 7×3+8

   x= 21+8

   x= 29

   hence his sister’s age is 29 years

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