Question 665671

I am 52,my granddaughter is 14. I was 38 when she was born (52-14=38). At some point I will be 3 times her age at that moment. Write an equation which models how old in years each of us will be when I am three times as old as my granddaughter. Explain the reasoning which helped me develop my answer.

I have started with x + 38 = (3 X 14) after this I am stuck, and after reading numerous sections in my text book, I am confusing myself. This is for an online course, so there is no vocal interaction between Instructor and pupil.

Any ideas will greatly appreciated.
Yvonne


Let the amount of years that you will be 3 times her age be Y. At that time (Y years), you'll be 52 + Y and she'll be 14 + Y


We then can say that: 52 + Y = 3(14 + Y)


52 + Y = 42 + 3Y


Y - 3Y = 42 - 52


-2Y = - 10


Y, or amount of years when you'll be 3 times her age = {{{(- 10)/- 2}}}, or {{{highlight_green(5)}}}


You can do the check!!!


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