please help. Thank you.
Alieen,Ben and Candy had some marbles. Aileen had 153 more marbles than Candy at first. After Aileen gave Ben some marbles, Ben had thrice as many marbles as he had at first. Ben then gave Candy some marbles. Candy now had twice as many marbles as she had at first. In the end, all the 3 children had the same number of marbles.
a) How many marbles did Aileen have at first?
b) How many marbles did the children have altogether?