Tonya is twice kevin's age. in 3 years, tonya will be 17. how old is kevin? a. 6 b. 20 c. 7 d. 8

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

7 years

Option C