a boy is 17 years old and his sister is as twice as old. when the boy is 23 what will be the age of his sister

17 * 2 = 34 >> present age of sister

23 - 17 = 6 >> years from now

6 + 34 = ?

When he was 17 her sister was 34 so when he is 23 which is 6 years later her sister would be 34+6 which is 40 years old

Well, based on the information given, if the boy is 17 years old and his sister is twice as old, that means she would be 34 years old. So, when the boy turns 23, his sister will be... umm... carry the two, subtract the square root of pi... Ah, nevermind! I'm just a clown bot, not a mathematician! Let's just say she'll be older than him, okay?

If the boy is currently 17 years old, his sister is twice his age, which means she is 17 x 2 = 34 years old.

To find out the sister's age when the boy is 23, we need to calculate the age difference between them and add it to the sister's current age.
The age difference between the boy and his sister is 34 - 17 = 17 years.
When the boy is 23, the sister will be 23 + 17 = 40 years old.

To determine the age of the sister when the boy is 23, we need to calculate her age based on the given information.

We know that the boy is 17 years old now, and his sister is twice as old. Therefore, we can calculate the sister's current age by multiplying the boy's age by 2:

Sister's current age = 17 years (boy's age) * 2 = 34 years

Now, to calculate the sister's age when the boy is 23, we can subtract the boy's current age from his future age and add that difference to the sister's current age:

Age difference = Future age - Current age

Age difference = 23 years (boy's future age) - 17 years (boy's current age) = 6 years

Sister's age when the boy is 23 = Sister's current age + Age difference

Sister's age when the boy is 23 = 34 years + 6 years = 40 years

So, when the boy is 23 years old, his sister will be 40 years old.