Vera and Vikki

Algebra Level pending

Vera and Vikki are sisters. Vera is 4 years old and Vikki is 13 years old. What will be Vikki's age when she is twice as old as Vera?

16 22 14 20 18

2 solutions

Tom Engelsman
Mar 4, 2021

Let $t$ be the number of years until Vikki is twice Vera's age. We require:

$13+t = 2(4+t) \Rightarrow t = 5$

which will make Vikki $\boxed{18}$ years-old.

Aditya Mittal
Apr 7, 2021

Let the current age of Vera be 'y' years.

$\therefore \text{Vikki's age} = y+9$

$A\cdot T\cdot Q \cdot$

$y+9 = 2y$

$y+9-y = 2y-y$

$9 = y$

Vera's age when Vikki's age is twice her age = 9

Vikki's age = 18