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6y ago
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6y ago

She is 98.

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Q: When I was 4 years old my sister was half my age. Now I am 100 years old. How old is my sister?
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When you were 4 years old your sister was half your age Now am 100 years How old is your sister?

If you mean "now you are 100 years old", then, my sister is now 98 years old, since she was 2 when I was 4.


When you were 2 years old my sister was half my age now you are 100 years old how old is my sister?

99


When you were four years old your sister was half your age Now you are 100 What is her age?

When you were 4 she was 2. You were two years older than she was. So if you are now 100 she is 98


When you were 2 years old your sister was Half of your age now you are 100 years old how old is your sister?

If when you were 2 years old your sister was half of your age, you would have been 2 and she would have been 1. So she is one year younger than you. Thus now you are 100 she will be one year younger and aged 99.


When I was six my sister was half my age now I am 60 how old is my sister now?

Your sister is now 57.


If you are Three years older than your sister and in 20 years your sister will be twice as old as you are now how old is your sister and you?

Let you be x years old now Let your sister be y years old now Right now: x+3 = y In 20 years you are x+20 and your sister is y+20 years old (y+20)=2x plugging in y from the first equation: [(x+3)+20]=2x x+23=2x x = 23 y = 23+3 = 26 To check, the answer if you are 23 now an your sister is 26 now in 20 years your sister will be 46 which is twice 23.


What is the half life of a radioisotope if a 100 g sample becomes 25 g after 18 years?

9 years.


When you were 2 years old your brother was half of your age now you are 100 years old tell you how old is your brother now?

99 years.When you were 2 years old, your brother was half your age which means that he is 1 year old then and you're only a year older than him.Now that you are 100 years old, your brother is 99 years old since you're a year older than him.


When I was 2 year old my younger sister is half of my age now that I am 50 how old is my sister?

49


Olan is 3yrs older than his sister roseone -half of olans age is thirteen years more than one- fourth his sister's age one year agofind their ages now?

olan is 54 his sister roseone is 51


David is eight years older then his sister In three years he will be twice as old as she will be How old are they now?

Sister = 5 David = 13


What will North America look like 100 million years from now?

It is now known what North America look like 100 million years from now.