wat is the perfect age for children to read and write

A. Hello ma’am After the age of 2 1/2 to 3 years you should put your child into playgroup and after that with the class nursery a child starts to learn to hold a pencil to write down and sleeping line and standing line and all these things so basically at the age of around 3 1/2 to 4 years a child learns to write and read after that approximately about 4 to 5 years