A boy is 17 tears old and his sister is twice as old. when the boy turns 23 yrs old what will be the age of his sister?

Question

Mathematics

Guest

20 November, 11:02

A boy is 17 tears old and his sister is twice as old. when the boy turns 23 yrs old what will be the age of his sister?

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Answers (2)

Know the Answer?

Lucille · Answer 1

So,

We know that the boy is half as old as his sister.

Boy now = 17

Sister now = 34

Boy + 6 = 23

So, we add 6 to the sister's current age.

34 + 6 = 40

The sister will be 40 years old.

Janiya Ferguson · Answer 2

B=17

s=2b=17 (2) = 34

so

34-17=17 therefor

s-17=b

so

s-17=23

add 17 to both sdies

s=40

sister will be 40