Amy has two older brothers. Ben is 3 years older than Amy. Chris is 10 years older than Ben. The total of their ages is 73. Form
an equation and use it to work out Amy's age.
2 answers:
73-(10+3)=60 you have to add 7 and 3 first, then you subtract it from 73
Amy's age=x
ben's age=x+3
chris' age=x+3+10
x+x+3+x+3+10=73
3x+16=73
3x=73-16
3x=57
x=19
Amy is 19 years old
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