# MATH WITH AGE PROBLEMS

by LYNN

(MIAMI, F.L.)

Grandpa age: 90

My age: 33

Lisa's age: 14

In years, how old was the older person when you were born?

Grandpa was 57 years old when I was born.

Write an equation that models how old in years each of you will be, when your ages add up to 150 years old.

x + 57 x + (x+57) = 150 (grandpa age and my age when our age's will equal to 150 years: 103.5 + 46.5 not sure how to put that in equation.

Explain the reasoning which helped you develop your equation.

Solve for your future ages. Are your answers reasonable, do they add up to 150?

yes-reasonable and add up to 150: 103.5 + 46.5 = 150

In years, how old were you when the youngest person was born?

19 years old when Lisa was born.

At some point during the lives of you and the youngest person, your age will be three times his/her age at that moment. Write an equation which models how old in years each of you will be when you are three times as old as the younger person.

when I was 24, Lisa was 6 years old. at that time I was 3x'z Lisa's age.

Explain the reasoning which helped you develop your equation.

Solve the equation for your ages when you are three times as old as the youngest person. Are your answers reasonable?

I know the answer is reasonable, but I am not sure what to do, in order to put numbers in equation, please HELP ME