Solution

39849

First name
Isaac Carpenter
School
Raysfield
Country
Age
6

Mark has twice as many sisters as brothers. Two brothers for mark plus sally sister plus 3 other sisters equals 4 sisters. Four is twice two. Sally has the same amount of brothers and sisters. Mark plus his 2 brothers equals 3 brothers for Sally and the three other sisters we said she had means she has 3 brothers and 3 sisters which is an equal amount.