Question

Jenny is four years older than miki. five years ago jenny was twice as old as miki. how old are they now?

Answer 1

Jenny age is 13 yrs & Miki is 9 yrs old.

Step-by-step explaination:

Given that Jenny is four years older than miki.

Therefore, let Miki present age = x yrs

⇒ Jenny present age = (x+4) yrs

Five years ago, Miki and Jenny age was

Miki age = (x-5) yrs

& Jenny age = (x+4-5) yrs i.e (x-1) yrs

No, it is given that five years ago jenny was twice as old as miki

∴ (x-1) = 2(x-5)

⇒ x-1 = 2x-10

⇒ x = 10-1 = 9

Hence, Miki present age = x yrs = 9 yrs

⇒ Jenny present age = (x+4) yrs = 9+4 = 13 yrs

Answer 2

If Jenny was twice Miki's age, and also, she is 4 years old, it means that Jenny was 8 years old and Miki was 4 years old. As this happened five years ago, then currently: Jenny = 8 + 5 = 13 years and Miki = 4 + 5 = 9 years.
Finally, Jenny is 13 years old and Miki is 9 years old.