Answer:Vera will be 9. and Vikki will be 22
Explanation:
Answer: Vera will be 9 and Vikki will be 18 years old.
2(4+x)=13+x
8+2x = 13+x
2x-x = 13-8
x=5
Vera: 4+5=9
Vikki: 13+5=18
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