beatrix is two years younger than her brother. she has a sister who is four years older than her.write an expression, using one varaible, for their total age

Question

beatrix is two years younger than her brother. she has a sister who is four years older than her.write an expression, using one varaible, for their total age

Answer 1

Let x = Beatrix's age

 

Translate:

 

  "beatrix is two years younger than her brother"      means

     x         is 2 years less than           (x+2)

 

  "sister who is four years older than her"     means

    (x+4)       is 4 more than              x

 

Total age is:     (Beatrix's Age)     +      (brother's age)     +      (sister's age)

 

Total age is:     (x)                      +      ( x + 2)               +      ( x + 4 )

 

Expression:      3x + 6