Question

My brother is 5 years older than me. My sister is 3 years younger than me.

Answer 1

Answer:

A) You would be 5

B) She would be 21

C) (Im guessing n in 9?)  She would be 6 then

D) (idk what k is)

E)7 Years apart

Hope this helps

Answer 2

Step-by-step explanation:

Say you are X years old, your brother is Y years old, are your sister is Z years old.

Your brother is 5 years older than you can be shown as the equation:

Y = X + 5

or

X = Y - 5

Your sister is 3 years younger than you can be shown as:

Z = X - 3

or

X = Z + 3

(a) When your brother was 10, X = 10 - 5, so you were 5.

(b) When your brother is 29, X = 29 - 5, so you were 24. When you were 24, Z = 24 - 3, your sister was 21.

(c) When you were n, you can just use the equation above, but switch the variables: Z = N - 3.

(d) When your brother was K: X = K - 5

(e) Y = X + 5 and X = Z + 3

Y = (Z + 3) + 5

Y = Z + 8

So your brother is 8 years older than your sister.