Respuesta :

Sydnet

Answer:

a. 14

Step-by-step explanation:

make equations

2x this is how old trinity is

x + 2x =42 their ages combined, solve equation

3x =42

14

animalcracker55

Answer:

C.21

Step-by-step explanation:

because if the question says trinity is twice the age of summer just do 42 divided by two which equals 21, to make sure just do 21 x 2 which equals 42.

Hope this helps.