Question

the sum of the ages of Petra and her mother is 45. her mothers is 6 years more than twice as old as Petra. how old are Petra and her mother?

Answer 1

Petra is 13 and her mother is 32. I used this equation:
$p + 2p + 6 = 45$
if you solve for p, you get 13. 13 times 2 plus 6 equals 32. So her mother is 32.