Tonya is twice Kevin's age.
2 answers:
Hi there, Kevin's age would be C. 7. This is because Tonya right now is 14. 7 is half of 14.
For this case we have the following variables:
T: Tonya's age
K: Kevin's age
If Tonya is twice Kevin's age we have:

In three years Tonya will have 17, it means:

We have a system of two equations with two unknowns:


From the second equation we have:
Substituting T = 14 in the first equation we have:

Clearing K:

So, Kevin is 7 years old
Answer:
7 years
Option C
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