Question

I need help understand how to solve this problem.

Answer 1

Answer:

let carols present age be x

and its age after 20years be x+20

and which is equal to three time of its present age = 3x

Step-by-step explanation:

so,

20+x= 3x

20= 3x -x

20=2x

20/2=x

10=x

I hope it is helpful