Solution

159442

Problem / game
First name
Maria
School
HJPS
Age
9

There are 24 coins altogether.
If one quarter of them show heads then that would be 6 coins out of 24 that are heads.
One you turn over two coins and one third are heads then there are still 24 coins and in total 8 coins (3 lots of 2 coins) would be turned over as 8 is a third of 24.